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7440-06-4

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7440-06-4 Usage

Description

Platinum, with the chemical symbol Pt and atomic number 78, is a dense, malleable, and ductile metal characterized by its silvery-white color. It is renowned for its exceptional resistance to corrosion, high melting point, and electrical conductivity. This chemical element is not only a staple in the jewelry industry but also plays a pivotal role in automotive catalytic converters and a myriad of industrial applications. Platinum's unique properties, coupled with its scarcity, render it a highly coveted material across various sectors.

Uses

Used in Jewelry Industry:
Platinum is utilized as a precious metal in the creation of high-quality jewelry due to its durability, hypoallergenic properties, and lustrous appearance.
Used in Automotive Industry:
Platinum is employed as a key component in catalytic converters for vehicles, where it facilitates the reduction of harmful emissions by converting toxic gases into less harmful substances before they are released into the atmosphere.
Used in Industrial Applications:
This versatile metal is used in various industrial applications, including the production of electrical contacts, resistance wires, and high-temperature furnaces, owing to its excellent thermal and electrical conductivity, as well as its resistance to corrosion.
Used in Chemical and Pharmaceutical Production:
Platinum is used as a catalyst in the manufacturing of various chemical and pharmaceutical compounds, capitalizing on its ability to initiate or accelerate chemical reactions without being consumed in the process.
Used in Financial Markets:
Recognized as a valuable commodity, platinum is traded in the financial markets and is often included in investment portfolios for its potential to retain value and hedge against economic volatility.

Check Digit Verification of cas no

The CAS Registry Mumber 7440-06-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 0 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 7440-06:
(6*7)+(5*4)+(4*4)+(3*0)+(2*0)+(1*6)=84
84 % 10 = 4
So 7440-06-4 is a valid CAS Registry Number.
InChI:InChI=1/Pt

7440-06-4 Well-known Company Product Price

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  • Alfa Aesar

  • (12755)  Platinum black, HiSPEC? 1000   

  • 7440-06-4

  • 0.25g

  • 654.0CNY

  • Detail
  • Alfa Aesar

  • (12755)  Platinum black, HiSPEC? 1000   

  • 7440-06-4

  • 1g

  • 2529.0CNY

  • Detail
  • Alfa Aesar

  • (12755)  Platinum black, HiSPEC? 1000   

  • 7440-06-4

  • 5g

  • 12644.0CNY

  • Detail
  • Alfa Aesar

  • (41814)  Platinum gauze, 45 mesh woven from 0.198mm (0.0078in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 25x25mm

  • 3746.0CNY

  • Detail
  • Alfa Aesar

  • (41814)  Platinum gauze, 45 mesh woven from 0.198mm (0.0078in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 50x50mm

  • 14686.0CNY

  • Detail
  • Alfa Aesar

  • (10283)  Platinum gauze, 52 mesh woven from 0.1mm (0.004in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 25x25mm

  • 1328.0CNY

  • Detail
  • Alfa Aesar

  • (10283)  Platinum gauze, 52 mesh woven from 0.1mm (0.004in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 50x50mm

  • 3896.0CNY

  • Detail
  • Alfa Aesar

  • (10283)  Platinum gauze, 52 mesh woven from 0.1mm (0.004in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 50x75mm

  • 6714.0CNY

  • Detail
  • Alfa Aesar

  • (10283)  Platinum gauze, 52 mesh woven from 0.1mm (0.004in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 75x75mm

  • 10304.0CNY

  • Detail
  • Alfa Aesar

  • (10283)  Platinum gauze, 52 mesh woven from 0.1mm (0.004in) dia wire, 99.9% (metals basis)   

  • 7440-06-4

  • 100x100mm

  • 11500.0CNY

  • Detail
  • Alfa Aesar

  • (46966)  Platinum gauze, Unimesh N7433, expanded metal mesh, 0.34mm (0.013in) thick   

  • 7440-06-4

  • 25x25mm

  • 2695.0CNY

  • Detail
  • Alfa Aesar

  • (46966)  Platinum gauze, Unimesh N7433, expanded metal mesh, 0.34mm (0.013in) thick   

  • 7440-06-4

  • 50x50mm

  • 10192.0CNY

  • Detail

7440-06-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name platinum

1.2 Other means of identification

Product number -
Other names Platinum

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7440-06-4 SDS

7440-06-4Synthetic route

platinum(IV) chloride
13454-96-1

platinum(IV) chloride

magnesium
7439-95-4

magnesium

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In water reduction with Mg in neutral or acidic soln.;100%
In water reduction with Mg in neutral or acidic soln.;100%
In water reaction in neutral and acid solutions complete;;
sodium octahydrotriborate tridioxanate

sodium octahydrotriborate tridioxanate

platinum(4+)

platinum(4+)

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In water room temp.; X-ray diffraction, gravimetric anal.;99%
platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane
68478-92-2

platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With 1-decene; 1,1,3,3-tetramethyldisiloxane In toluene mixt. of tetramethyldisiloxane, 1-decene in unhyd. toluene stirred at room temp., evacuated, refilled with N2 three times, Pt-complex added, stirred at 100°C for 5 d; centrifuged, decanted, washed by toluene, centrifuged twice, dried indervac.; detd. by XRD, TEM;96%
dihydrogen hexachloroplatinate(IV) hexahydrate

dihydrogen hexachloroplatinate(IV) hexahydrate

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With hydrogen In water Reagent/catalyst; Temperature;96%
Irradiation (UV/VIS); photodeposition on NaInS2;
With aluminium In water 65 % surfactant contg. Pt-compd. soln., heating to 85 °C, coolingto room temp., heating to 80 °C, thermal aging was repeated 3 ti mes, Pt was deposited onto an Au/Ti/Si substrate with plating with Al; Pt film was washed with EtOH;
potassium tetranitroplatinate(IV)

potassium tetranitroplatinate(IV)

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In ethanol; water Kinetics; Irradiation (UV/VIS); photoreduction of K2(Pt(NO2)4) in a suspension of anatase in H2O with 4 vol.-% C2H5OH at various temp. (pH: 3.6);; deposition of Pt on the TiO2 surface;;90%
With hydrogenchloride; zinc In water byproducts: KCl, ZnCl2; aq. K2(Pt(NO2)4) soln., at elevated temp. or in coldness;;
With HCl; Zn In water byproducts: KCl, ZnCl2; aq. K2(Pt(NO2)4) soln., at elevated temp. or in coldness;;
1-MeCyt
1122-47-0

1-MeCyt

di(cis-[bis(dimethylphenylphosphane)(μ-hydroxo)platinum(II)]) nitrate

di(cis-[bis(dimethylphenylphosphane)(μ-hydroxo)platinum(II)]) nitrate

acetonitrile
75-05-8

acetonitrile

cis-[(PMe2Ph)2Pt(1-methylcytosinate-N(3),N(4)(1-))]3(NO3)3*H2O*(acetonitrile)

cis-[(PMe2Ph)2Pt(1-methylcytosinate-N(3),N(4)(1-))]3(NO3)3*H2O*(acetonitrile)

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In acetonitrile byproducts: H2O; suspn. of Pt complex and ligand (molar ratio 1:2) in MeCN stirred at room temp. for a few min; stored at room temp. overnight; filtered; Et2O added to filtrate; filtered; solid washed with Et2O; dried under vac.; dissolved in MeCN; crystd. by slow condensation of Et2O vapors; elem. anal.;A 81%
B 1%
bis(η3-allyl)(tetracyanoethylene)platinum
98689-94-2

bis(η3-allyl)(tetracyanoethylene)platinum

A

CH2CHCH2C(CN)2C(CN)2CH2CHCH2
98704-14-4

CH2CHCH2C(CN)2C(CN)2CH2CHCH2

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With triphenylphosphine In dichloromethane a soln. PPh3 in CH2Cl2 was added dropwise with stirring to a CH2Cl2 soln. of Pt-complex under N2, mixt. was stirred for 2 h at room temp.; Pt metal was removed by filtration through Florisil, filtrate concd. and subjected to HLPC;A 73%
B n/a
With triphenylphosphine In dichloromethane-d2 a soln. PPh3 in CH2Cl2 was added dropwise with stirring to a CH2Cl2 soln. of Pt-complex under N2; followed by (1)H and (31)P NMR;
formic acid
64-18-6

formic acid

platinum(IV) chloride
13454-96-1

platinum(IV) chloride

A

carbon dioxide
124-38-9

carbon dioxide

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With cinchonine In water byproducts: HCl; heating (140+/-5°C); filtn. (G4 filter), washing (aq. NaHCO3; H2O), freeze drying;A n/a
B 71%
platinum(II) bromde

platinum(II) bromde

1,1'-dimethyl-3,3'-methylenediimidazolium bromide

1,1'-dimethyl-3,3'-methylenediimidazolium bromide

1,1′-di(methyl)-3,3′-methylene-4-diimidazolin-2,2′-diylideneplatinum(II) dibromide

1,1′-di(methyl)-3,3′-methylene-4-diimidazolin-2,2′-diylideneplatinum(II) dibromide

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With sodium acetate trihydrate In dimethyl sulfoxide byproducts: NaBr, acetic acid; PtBr2, Na salt and ligand (molar ratio 1:2:1) dissolved in DMSO; heated to 80°C for 2 h and then to 100°C for 1 h; cooled to room temp.; filtered; solvent evapd. from filtrate; washed with CH2Cl2; extd. with small amt. of H2O; residue washed with THF; dried under high vac.; elem. anal.;A 64.2%
B n/a
C6H12Br2O2Pt

C6H12Br2O2Pt

A

cobaltocenium bromide

cobaltocenium bromide

B

(E)-2,3-dimethoxybut-2-ene
41715-05-3

(E)-2,3-dimethoxybut-2-ene

C

(Z)-2,3-dimethoxybut-2-ene
41715-06-4

(Z)-2,3-dimethoxybut-2-ene

D

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With cobaltocene In dichloromethane-d2A n/a
B n/a
C 64%
D n/a
Ru3Pt(μ-H)(μ4-η2-CC(t-Bu))(CO)9(cycloocta-1,5-diene)
119593-13-4

Ru3Pt(μ-H)(μ4-η2-CC(t-Bu))(CO)9(cycloocta-1,5-diene)

A

Ru3(μ-H)(μ3-η2-CC(t-Bu))(CO)9
57673-31-1

Ru3(μ-H)(μ3-η2-CC(t-Bu))(CO)9

B

Pt{Ru3(μ-H)(μ4-η2-CC(t-Bu))(CO)9}2
123857-98-7

Pt{Ru3(μ-H)(μ4-η2-CC(t-Bu))(CO)9}2

C

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In toluene N2-atmosphere; ambient temp., 5 days (crystn.); washing (petroleum ether); elem. anal.;A n/a
B 50%
C n/a
In dichloromethane N2-atmosphere; ambient temp., 5 days (crystn.); washing (petroleum ether); elem. anal.;A n/a
B 50%
C n/a
trans-[PtCl(Me)(PEt3)2]

trans-[PtCl(Me)(PEt3)2]

A

dichlorobis(triethylphosphine)platinum
13965-02-1, 14177-93-6, 15692-07-6

dichlorobis(triethylphosphine)platinum

B

methane
34557-54-5

methane

C

ethane
74-84-0

ethane

D

ethene
74-85-1

ethene

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A 48%
B n/a
C 2%
D <1
E 43%
trans-{PtCH3(CN)(PEt3)2}
22289-45-8

trans-{PtCH3(CN)(PEt3)2}

A

Pt(CN)2(P(C2H5)3)2

Pt(CN)2(P(C2H5)3)2

B

methane
34557-54-5

methane

C

ethane
74-84-0

ethane

D

ethene
74-85-1

ethene

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A 48%
B n/a
C 2%
D <1
E 43%
trans-[Pt(Me)I(PEt3)2]

trans-[Pt(Me)I(PEt3)2]

A

methane
34557-54-5

methane

B

ethane
74-84-0

ethane

C

ethene
74-85-1

ethene

D

Pt(PEt3)2I2
15692-97-4

Pt(PEt3)2I2

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A n/a
B 2%
C <1
D 48%
E 43%
platinum(IV) chloride
13454-96-1

platinum(IV) chloride

magnesium
7439-95-4

magnesium

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In water reduction with Mg in neutral or acidic soln.;100%
In water reduction with Mg in neutral or acidic soln.;100%
In water reaction in neutral and acid solutions complete;;
sodium octahydrotriborate tridioxanate

sodium octahydrotriborate tridioxanate

platinum(4+)

platinum(4+)

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In water room temp.; X-ray diffraction, gravimetric anal.;99%
platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane
68478-92-2

platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With 1-decene; 1,1,3,3-tetramethyldisiloxane In toluene mixt. of tetramethyldisiloxane, 1-decene in unhyd. toluene stirred at room temp., evacuated, refilled with N2 three times, Pt-complex added, stirred at 100°C for 5 d; centrifuged, decanted, washed by toluene, centrifuged twice, dried indervac.; detd. by XRD, TEM;96%
dihydrogen hexachloroplatinate(IV) hexahydrate

dihydrogen hexachloroplatinate(IV) hexahydrate

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With hydrogen In water Reagent/catalyst; Temperature;96%
Irradiation (UV/VIS); photodeposition on NaInS2;
With aluminium In water 65 % surfactant contg. Pt-compd. soln., heating to 85 °C, coolingto room temp., heating to 80 °C, thermal aging was repeated 3 ti mes, Pt was deposited onto an Au/Ti/Si substrate with plating with Al; Pt film was washed with EtOH;
potassium tetranitroplatinate(IV)

potassium tetranitroplatinate(IV)

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In ethanol; water Kinetics; Irradiation (UV/VIS); photoreduction of K2(Pt(NO2)4) in a suspension of anatase in H2O with 4 vol.-% C2H5OH at various temp. (pH: 3.6);; deposition of Pt on the TiO2 surface;;90%
With hydrogenchloride; zinc In water byproducts: KCl, ZnCl2; aq. K2(Pt(NO2)4) soln., at elevated temp. or in coldness;;
With HCl; Zn In water byproducts: KCl, ZnCl2; aq. K2(Pt(NO2)4) soln., at elevated temp. or in coldness;;
1-MeCyt
1122-47-0

1-MeCyt

di(cis-[bis(dimethylphenylphosphane)(μ-hydroxo)platinum(II)]) nitrate

di(cis-[bis(dimethylphenylphosphane)(μ-hydroxo)platinum(II)]) nitrate

acetonitrile
75-05-8

acetonitrile

cis-[(PMe2Ph)2Pt(1-methylcytosinate-N(3),N(4)(1-))]3(NO3)3*H2O*(acetonitrile)

cis-[(PMe2Ph)2Pt(1-methylcytosinate-N(3),N(4)(1-))]3(NO3)3*H2O*(acetonitrile)

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In acetonitrile byproducts: H2O; suspn. of Pt complex and ligand (molar ratio 1:2) in MeCN stirred at room temp. for a few min; stored at room temp. overnight; filtered; Et2O added to filtrate; filtered; solid washed with Et2O; dried under vac.; dissolved in MeCN; crystd. by slow condensation of Et2O vapors; elem. anal.;A 81%
B 1%
bis(η3-allyl)(tetracyanoethylene)platinum
98689-94-2

bis(η3-allyl)(tetracyanoethylene)platinum

A

CH2CHCH2C(CN)2C(CN)2CH2CHCH2
98704-14-4

CH2CHCH2C(CN)2C(CN)2CH2CHCH2

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With triphenylphosphine In dichloromethane a soln. PPh3 in CH2Cl2 was added dropwise with stirring to a CH2Cl2 soln. of Pt-complex under N2, mixt. was stirred for 2 h at room temp.; Pt metal was removed by filtration through Florisil, filtrate concd. and subjected to HLPC;A 73%
B n/a
With triphenylphosphine In dichloromethane-d2 a soln. PPh3 in CH2Cl2 was added dropwise with stirring to a CH2Cl2 soln. of Pt-complex under N2; followed by (1)H and (31)P NMR;
formic acid
64-18-6

formic acid

platinum(IV) chloride
13454-96-1

platinum(IV) chloride

A

carbon dioxide
124-38-9

carbon dioxide

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With cinchonine In water byproducts: HCl; heating (140+/-5°C); filtn. (G4 filter), washing (aq. NaHCO3; H2O), freeze drying;A n/a
B 71%
platinum(II) bromde

platinum(II) bromde

1,1'-dimethyl-3,3'-methylenediimidazolium bromide

1,1'-dimethyl-3,3'-methylenediimidazolium bromide

1,1′-di(methyl)-3,3′-methylene-4-diimidazolin-2,2′-diylideneplatinum(II) dibromide

1,1′-di(methyl)-3,3′-methylene-4-diimidazolin-2,2′-diylideneplatinum(II) dibromide

B

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With sodium acetate trihydrate In dimethyl sulfoxide byproducts: NaBr, acetic acid; PtBr2, Na salt and ligand (molar ratio 1:2:1) dissolved in DMSO; heated to 80°C for 2 h and then to 100°C for 1 h; cooled to room temp.; filtered; solvent evapd. from filtrate; washed with CH2Cl2; extd. with small amt. of H2O; residue washed with THF; dried under high vac.; elem. anal.;A 64.2%
B n/a
C6H12Br2O2Pt

C6H12Br2O2Pt

A

cobaltocenium bromide

cobaltocenium bromide

B

(E)-2,3-dimethoxybut-2-ene
41715-05-3

(E)-2,3-dimethoxybut-2-ene

C

(Z)-2,3-dimethoxybut-2-ene
41715-06-4

(Z)-2,3-dimethoxybut-2-ene

D

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With cobaltocene In dichloromethane-d2A n/a
B n/a
C 64%
D n/a
Ru3Pt(μ-H)(μ4-η2-CC(t-Bu))(CO)9(cycloocta-1,5-diene)
119593-13-4

Ru3Pt(μ-H)(μ4-η2-CC(t-Bu))(CO)9(cycloocta-1,5-diene)

A

Ru3(μ-H)(μ3-η2-CC(t-Bu))(CO)9
57673-31-1

Ru3(μ-H)(μ3-η2-CC(t-Bu))(CO)9

B

Pt{Ru3(μ-H)(μ4-η2-CC(t-Bu))(CO)9}2
123857-98-7

Pt{Ru3(μ-H)(μ4-η2-CC(t-Bu))(CO)9}2

C

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In toluene N2-atmosphere; ambient temp., 5 days (crystn.); washing (petroleum ether); elem. anal.;A n/a
B 50%
C n/a
In dichloromethane N2-atmosphere; ambient temp., 5 days (crystn.); washing (petroleum ether); elem. anal.;A n/a
B 50%
C n/a
trans-[PtCl(Me)(PEt3)2]

trans-[PtCl(Me)(PEt3)2]

A

dichlorobis(triethylphosphine)platinum
13965-02-1, 14177-93-6, 15692-07-6

dichlorobis(triethylphosphine)platinum

B

methane
34557-54-5

methane

C

ethane
74-84-0

ethane

D

ethene
74-85-1

ethene

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A 48%
B n/a
C 2%
D <1
E 43%
trans-{PtCH3(CN)(PEt3)2}
22289-45-8

trans-{PtCH3(CN)(PEt3)2}

A

Pt(CN)2(P(C2H5)3)2

Pt(CN)2(P(C2H5)3)2

B

methane
34557-54-5

methane

C

ethane
74-84-0

ethane

D

ethene
74-85-1

ethene

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A 48%
B n/a
C 2%
D <1
E 43%
trans-[Pt(Me)I(PEt3)2]

trans-[Pt(Me)I(PEt3)2]

A

methane
34557-54-5

methane

B

ethane
74-84-0

ethane

C

ethene
74-85-1

ethene

D

Pt(PEt3)2I2
15692-97-4

Pt(PEt3)2I2

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A n/a
B 2%
C <1
D 48%
E 43%
trans-(triethylphosphine)2PtMeBr
15691-67-5, 22289-47-0

trans-(triethylphosphine)2PtMeBr

A

methane
34557-54-5

methane

B

ethane
74-84-0

ethane

C

ethene
74-85-1

ethene

D

[PtBr2(P(CH2CH3)3)2]
15636-78-9, 15692-84-9, 13985-90-5

[PtBr2(P(CH2CH3)3)2]

E

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In decalin Kinetics; Pt complex was heated in decalin under Ar at 170 and 200°C; rateconst for decompn. at 200°C is given; Pt was filtered off, light petroleum was added to the concd. soln., crystals were collected, gas. products were detd. by GLS;A n/a
B 2%
C <1
D 48%
E 43%
platinum(II) acetylacetonate

platinum(II) acetylacetonate

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With 1-butanol; oleylamine; acetic acid In toluene High Pressure; mixt. of 10 mM Pt(acac)2 (2 ml), 80 mM CH3COOH (0.5 ml) and 0.1 M oleylamine (1 ml) in toluene, 1-butanol (1 ml) and DMF (2.5 ml) heated in autoclave (185°C, 16 h); cooled naturally to room temp.; centrifuged; ppt. washed with EtOH;45%
With 1-butanol; oleylamine; acetic acid In N,N-dimethyl-formamide; toluene High Pressure; mixt. of 10 mM Pt(acac)2 (2 ml), 80 mM CH3COOH (0.5 ml) and 0.1 M oleylamine (1 ml) in toluene, 1-butanol (1 ml) and DMF (2.5 ml) heated in autoclave (185°C, 16 h); cooled naturally to room temp.; centrifuged; ppt. washed with EtOH;45%
With 1-butanol; oleylamine; acetic acid In N,N-dimethyl-formamide; toluene High Pressure; mixt. of 10 mM Pt(acac)2 (2 ml), 80 mM CH3COOH (0.5 ml) and 0.1 M oleylamine (1 ml) in toluene, 1-butanol (1 ml) and DMF (2.5 ml) heated in autoclave (145°C); cooled naturally to room temp.; centrifuged; ppt. washed with EtOH;
Pt(PPh3)2(N2O2)

Pt(PPh3)2(N2O2)

iodine
7553-56-2

iodine

trans-diiodobis(triphenylphosphane)platinum(II)
35085-00-8, 23523-31-1, 35085-01-9

trans-diiodobis(triphenylphosphane)platinum(II)

B

platinum
7440-06-4

platinum

C

dinitrogen monoxide
10024-97-2

dinitrogen monoxide

Conditions
ConditionsYield
With Et3N In dichloromethane byproducts: PPh3O; Pt-compd. and Et3N were dissolved in CH2Cl2, cooling to -78 °C, 2equiv. of I2 was added, warming to room temp. over 1 h; ppt. was filtered off;A 45%
B n/a
C n/a
trans-chlorohydridobis(triethylphosphine)platinum(II)
16842-17-4, 20436-52-6, 89254-73-9

trans-chlorohydridobis(triethylphosphine)platinum(II)

tetrabutylammonium perchlorate
1923-70-2

tetrabutylammonium perchlorate

A

1-butylene
106-98-9

1-butylene

trans-{PtH(CH2CN)(PEt3)2}
118831-46-2

trans-{PtH(CH2CN)(PEt3)2}

C

tributyl-amine
102-82-9

tributyl-amine

D

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In acetonitrile; benzene byproducts: H2; Electrolysis; electrochemically reducing trans-(PtH(Cl)(PEt3)2) at -2.1 V vs Ag/AgCl in CH3CN/C6H6 (5/2, v/v), terminating electrolysis at constancy of current; 36% of hydrido complex recovered; 31P NMR;A n/a
B 38%
C n/a
D n/a
platinum(IV) oxide
1314-15-4

platinum(IV) oxide

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With hydrogen In acetic acid under 760.051 Torr; for 1.5h;
With hydrogenchloride; hydrogen In hydrogenchloride bubbling of H2 through suspn. of PtO2 in aq. HCl for 20 min;
With hydrogen In water react. of PtO2 with H2 (50 psi) in water at room temp. for 30 min;
dihydrogen hexachloroplatinate

dihydrogen hexachloroplatinate

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With poly(1-vinyl-2-pyrrolidone) In ethanol; water at 100℃; for 14.5h; Heating / reflux;
With J-0381V; L-10D; ethanol; sodium hydrogencarbonate In water at 70℃;
With ethanol; sodium hydrogencarbonate; polysorbate 80 In water at 70℃;
hexachloroplatinic acid

hexachloroplatinic acid

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In 1-ethenyl-2-pyrrolidinone; ethanol; water at 100℃; for 2.66667h; Product distribution / selectivity; Heating / reflux;
In poly(sodium acrylate); ethanol; water at 100℃; for 2.66667h; Product distribution / selectivity; Heating / reflux;
dihydrogen hexachloroplatinate

dihydrogen hexachloroplatinate

formic acid
64-18-6

formic acid

platinum
7440-06-4

platinum

Conditions
ConditionsYield
With sodium carbonate In not given heating;
With Na2CO3 In not given heating;
sodium hexachloroplatinate

sodium hexachloroplatinate

formic acid
64-18-6

formic acid

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In ammonia Electrochem. Process; solution of {Pt(NH3)2Cl2} in aq. NH3, 90°C;;
With NaB(C2H5)3H In tetrahydrofuran byproducts: NaCl, B(C2H5)3, H2; 23°C, 2 h; Washing with H2O to separate alkali halogenide from metal powder.;
In ammonia Electrochem. Process; no pptn. of Pt out of a satd. soln. of {Pt(NH3)2(CNS)2} in aq. NH3, evolution of H2 at the cathode;;0%
In ammonia Electrochem. Process; solution of {Pt(NH3)2Cl2} in aq. NH3, 90°C;;
Co(NH3)5(NO2)(2+)*Pt(NO2)4(2-)*1.5H2O=(Co(NH3)5(NO2))(Pt(NO2)4)*1.5H2O

Co(NH3)5(NO2)(2+)*Pt(NO2)4(2-)*1.5H2O=(Co(NH3)5(NO2))(Pt(NO2)4)*1.5H2O

ammonium chloride

ammonium chloride

A

Co0.40Pt0.60

Co0.40Pt0.60

B

Co0.10Pt0.90

Co0.10Pt0.90

C

Pt0.75Co0.25

Pt0.75Co0.25

D

platinum
7440-06-4

platinum

E

cobalt(II) chloride
7646-79-9

cobalt(II) chloride

Conditions
ConditionsYield
In neat (no solvent) under He; mixt. of Co-Pt complex and NH4Cl (1:10 wt/wt) heated to 500°C; detd. by X-ray powder diffraction;
platinum tetrabromide
68938-92-1

platinum tetrabromide

platinum
7440-06-4

platinum

Conditions
ConditionsYield
In water Electrochem. Process; pptn. from a concd. aq. soln. of PtBr4 (bunsen cell);;
With alc. In not given heating;
With diethyl ether In not given heating;
bismuth
7440-69-9

bismuth

aqueous H2 O2

aqueous H2 O2

sulfuric acid
7664-93-9

sulfuric acid

pyrographite
7440-44-0

pyrographite

2-butyl-5-hydroxymethyl-1H-imidazole
68283-19-2

2-butyl-5-hydroxymethyl-1H-imidazole

platinum
7440-06-4

platinum

2-butyl-1H-imidazole-5-carboxaldehyde
68282-49-5

2-butyl-1H-imidazole-5-carboxaldehyde

Conditions
ConditionsYield
With sodium hydroxide In water100%
With sodium hydroxide In water98.2%
With sodium hydroxide In methanol; water94.5%
2-(cyanomethyl)cyclohexanone
42185-27-3

2-(cyanomethyl)cyclohexanone

platinum
7440-06-4

platinum

indole
120-72-9

indole

Conditions
ConditionsYield
With hydrogen100%
bis(diethoxyphosphoryl)disulphide
2901-90-8

bis(diethoxyphosphoryl)disulphide

platinum
7440-06-4

platinum

bis(O,O'-diethyldithiophosphato-S,S')platinum(II)
37583-01-0

bis(O,O'-diethyldithiophosphato-S,S')platinum(II)

Conditions
ConditionsYield
In styrene at 20℃; for 0.333333h; Product distribution / selectivity;100%
calcium
7440-70-2

calcium

platinum
7440-06-4

platinum

cadmium
7440-43-9

cadmium

Ca6PtCd11

Ca6PtCd11

Conditions
ConditionsYield
In neat (no solvent) at 600 - 950℃; for 111h; Sealed tube; Schlenk technique; Inert atmosphere; Glovebox;100%
hydrogenchloride
7647-01-0

hydrogenchloride

CYANAMID
420-04-2

CYANAMID

platinum
7440-06-4

platinum

Cl6Pt(2-)*2CH4ClN2(1+)

Cl6Pt(2-)*2CH4ClN2(1+)

Conditions
ConditionsYield
Stage #1: platinum With hydrogenchloride; dihydrogen peroxide In water
Stage #2: hydrogenchloride In water
Stage #3: CYANAMID With hydrogenchloride In water
100%
acetic acid-(5-chloro-2-hydroxy-3-nitro-anilide)
156016-33-0

acetic acid-(5-chloro-2-hydroxy-3-nitro-anilide)

platinum
7440-06-4

platinum

7-acetamino-5-chloro-2-mercaptobenzoxazole

7-acetamino-5-chloro-2-mercaptobenzoxazole

Conditions
ConditionsYield
With carbon disulfide; potassium hydroxide In ethanol; ethyl acetate99%
rac.-N-[1-(5-chloro-1H-benzoimidazol-2-yl)-ethyl]-3-ethynyl-4-(pyrrolidine-1-carbonyl)-benzamide
713138-43-3

rac.-N-[1-(5-chloro-1H-benzoimidazol-2-yl)-ethyl]-3-ethynyl-4-(pyrrolidine-1-carbonyl)-benzamide

platinum
7440-06-4

platinum

N-[1-(5-chloro-1H-benzimidazol-2-yl)-ethyl]-3-ethyl-4-(pyrrolidin-1-yl-carbonyl)-benzamide

N-[1-(5-chloro-1H-benzimidazol-2-yl)-ethyl]-3-ethyl-4-(pyrrolidin-1-yl-carbonyl)-benzamide

Conditions
ConditionsYield
With hydrogen In 1,4-dioxane; water99%
2,4-diamino-5-nitroso-6-hydroxypyrimidine
2387-48-6

2,4-diamino-5-nitroso-6-hydroxypyrimidine

platinum
7440-06-4

platinum

2-amino-1,9-dihydro-6H-purin-6-one
73-40-5

2-amino-1,9-dihydro-6H-purin-6-one

Conditions
ConditionsYield
98.9%
allyl methacrylate
96-05-9

allyl methacrylate

platinum
7440-06-4

platinum

γ-methacryloxypropyltrichlorosilane

γ-methacryloxypropyltrichlorosilane

Conditions
ConditionsYield
With trichlorosilane; [SG]-S-Pt In hexane98%
2,6-diisopropylcyclohexanol
95299-24-4

2,6-diisopropylcyclohexanol

platinum
7440-06-4

platinum

2,6-diisopropylphenol
2078-54-8

2,6-diisopropylphenol

Conditions
ConditionsYield
96.5%
ethyl 2-methyl-4,4,4-trifluoroacetoacetate
344-00-3

ethyl 2-methyl-4,4,4-trifluoroacetoacetate

platinum
7440-06-4

platinum

ethyl 3-hydroxy-2-methyl-4,4,4-trifluorobutanoate
91600-33-8

ethyl 3-hydroxy-2-methyl-4,4,4-trifluorobutanoate

Conditions
ConditionsYield
With nitrogen; hydrogen; triethylamine; Pt/C96%
platinum
7440-06-4

platinum

isopropyl 4,4,4-trifluoro-3-oxobutanoate

isopropyl 4,4,4-trifluoro-3-oxobutanoate

isopropyl 4,4,4-trifluoro-3-hydroxybutanoate

isopropyl 4,4,4-trifluoro-3-hydroxybutanoate

Conditions
ConditionsYield
With nitrogen; hydrogen; triethylamine; Pt/C96%
ethyl 4,4,4-trifluoroacetoacetate
372-31-6

ethyl 4,4,4-trifluoroacetoacetate

platinum
7440-06-4

platinum

ethyl 3-hydroxy-4,4,4-trifluorobutyrate
372-30-5

ethyl 3-hydroxy-4,4,4-trifluorobutyrate

Conditions
ConditionsYield
With nitrogen; hydrogen; triethylamine; Pt/C96%
With nitrogen; hydrogen; triethylamine; Pt/C96%
With nitrogen; hydrogen; triethylamine; Pt/C96%
With nitrogen; hydrogen; triethylamine96%
With methanesulfonic acid; nitrogen; hydrogen; Pt/C50%
2-(2-carbamoyloxyethyl)-5-(3,5-dichlorophenylthio)-4-isopropyl-1-(p-nitrobenzyl)-1H-imidazole
178980-69-3

2-(2-carbamoyloxyethyl)-5-(3,5-dichlorophenylthio)-4-isopropyl-1-(p-nitrobenzyl)-1H-imidazole

platinum
7440-06-4

platinum

1-(4-Aminobenzyl)-5-(3,5-dichlorophenylthio)-2-(2-carbamoyloxyethyl)-4-isopropyl-1H-imidazole
178980-34-2

1-(4-Aminobenzyl)-5-(3,5-dichlorophenylthio)-2-(2-carbamoyloxyethyl)-4-isopropyl-1H-imidazole

Conditions
ConditionsYield
In ethyl acetate95%
2,5-dichlorophenyl-1-sulfochloride

2,5-dichlorophenyl-1-sulfochloride

platinum
7440-06-4

platinum

2,5-dichlorbenzenethiol
5858-18-4

2,5-dichlorbenzenethiol

Conditions
ConditionsYield
In water; toluene95%
hydrogenchloride
7647-01-0

hydrogenchloride

platinum
7440-06-4

platinum

1,5-dicyclooctadiene
5259-72-3, 10060-40-9, 111-78-4

1,5-dicyclooctadiene

dichloro(1,5-cyclooctadiene)platinum(ll)
12080-32-9

dichloro(1,5-cyclooctadiene)platinum(ll)

Conditions
ConditionsYield
With HNO3; SnCl2*2H2O In further solvent(s) byproducts: nitrogen oxides; N2-atmosphere; dissoln. of Pt in aqua regia by stirring overnight at 60°C, concn., addn. of concd. HCl, evapn., dissoln. in H2O/PrOH=4:3,addn. of excess COD and slight excess SnCl2, stirring (12°C, 7 d , pptn.); filtration, washing (H2O), drying (SiO2); elem. anal.;95%
rubidium hydride

rubidium hydride

hydrogen
1333-74-0

hydrogen

platinum
7440-06-4

platinum

rubidium [hydridoplatinate(II)]

rubidium [hydridoplatinate(II)]

Conditions
ConditionsYield
In neat (no solvent) loading and unloading carried out in inert gas; RbH and Pt with a molar ratio of 2.1:1 mixed and filled in molybdenum boat; transferred into a low pressure autoclave; evacuated; filled with H2 up to 1 bar; heated at 620 K for 6 h; unloaded in the glove box;95%
rubidium hydride

rubidium hydride

hydrogen
1333-74-0

hydrogen

platinum
7440-06-4

platinum

rubidium hydride [hydridoplatinate(II)]

rubidium hydride [hydridoplatinate(II)]

Conditions
ConditionsYield
In neat (no solvent) loading and unloading carried out in inert gas; RbH and Pt with a molar ratio of 3.1:1 mixed and filled in molybdenum boat; transferred into a low pressure autoclave; evacuated; filled with H2 up to 1 bar; heated at 620 K for 6 h; unloaded in the glove box;95%
1-(4-diphenyl)3,3-dimethyl-1-(1-imidazolyl)-5-hexen-2-ol

1-(4-diphenyl)3,3-dimethyl-1-(1-imidazolyl)-5-hexen-2-ol

pyrographite
7440-44-0

pyrographite

platinum
7440-06-4

platinum

1-(4-Diphenyl)-3,3-dimethyl-1-(1-imidazolyl)-2-hexanol

1-(4-Diphenyl)-3,3-dimethyl-1-(1-imidazolyl)-2-hexanol

Conditions
ConditionsYield
With hydrogen In methanol93.7%
sulfuryl dichloride
7791-25-5

sulfuryl dichloride

carbon monoxide
201230-82-2

carbon monoxide

platinum
7440-06-4

platinum

cis-dicarbonyldichloroplatinum(II)
25478-60-8, 15020-32-3, 62841-60-5

cis-dicarbonyldichloroplatinum(II)

Conditions
ConditionsYield
In thionyl chloride addn. of platinum black to soln. of SO2Cl2 in SOCl2 under CO; after 150h soln. evapd. and residue dissolved in toluene; detn. by IR;92%
With platinum In thionyl chloride soln. of SO2Cl2 in SOCl2 under CO (1 atm) and platinum black sealed in tube; suspn. stirred 30 h at temp. 60°C; not isolated; detn. by IR;

7440-06-4Relevant articles and documents

Platinum nanofilm formation by EC-ALE via redox replacement of UPD copper: Studies using in-situ scanning tunneling microscopy

Kim, Youn-Geun,Kim, Jay Y.,Vairavapandian, Deepa,Stickney, John L.

, p. 17998 - 18006 (2006)

The growth of Pt nanofilms on well-defined Au(111) electrode surfaces, using electrochemical atomic layer epitaxy (EC-ALE), is described here. EC-ALE is a deposition method based on surface-limited reactions. This report describes the first use of surface-limited redox replacement reactions (SLR3) in an EC-ALE cycle to form atomically ordered metal nanofilms. The SLR 3 consisted of the underpotential deposition (UPD) of a copper atomic layer, subsequently replaced by Pt at open circuit, in a Pt cation solution. This SLR3 was then used a cycle, repeated to grow thicker Pt films. Deposits were studied using a combination of electrochemistry (EC), in-situ scanning tunneling microscopy (STM) using an electrochemical flow cell, and ultrahigh vacuum (UHV) surface studies combined with electrochemistry (UHV-EC). A single redox replacement of upd Cu from a PtCl42- solution yielded an incomplete monolayer, though no preferential deposition was observed at step edges. Use of an iodine adlayer, as a surfactant, facilitated the growth of uniformed films. In-situ STM images revealed ordered Au(111)-(√3 × √3)R30°-iodine structure, with areas partially distorted by Pt nanoislands. After the second application, an ordered Moire pattern was observed with a spacing consistent with the lattice mismatch between a Pt monolayer and the Au(111) substrate. After application of three or more cycles, a new adlattice, a (3 × 3)-iodine structure, was observed, previously observed for I atoms adsorbed on Pt(111). In addition, five atom adsorbed Pt-I complexes randomly decorated the surface and showed some mobility. These pinwheels, planar PtI4, complexes, and the ordered (3 × 3)-iodine layer all appeared stable during rinsing with blank solution, free of I- and the Pt complex (PtCl42-).

High-resolution in situ and ex situ TEM studies on graphene formation and growth on Pt nanoparticles

Peng, Zhenmeng,Somodi, Ferenc,Helveg, Stig,Kisielowski, Christian,Specht, Petra,Bell, Alexis T.

, p. 22 - 29 (2012)

The formation of graphene layers on MgO-supported Pt nanoparticles was studied by both in situ and ex situ high-resolution transmission electron microscopy (HRTEM). The HRTEM images indicate that graphene sheets grow from steps in the surface of Pt nanoparticles. The subsequent morphology of the graphene sheets is a strong function of Pt particle size. For particles less than ~6 nm in diameter, the graphene sheets form nanotubes or move from the surface of Pt particles and accumulate on the MgO support. Complete particle envelopment by multiple graphene layers was only observed for particle greater than ~6 nm in diameter. The observed dependence of graphene morphology on Pt nanoparticle size and shape is associated with the strain energy generated between graphene layers during their growth and the overall free energy of the graphene-Pt system.

Fabrication and evaluation of platinum/diamond composite electrodes for electrocatalysis: Preliminary studies of the oxygen-reduction reaction

Wang, Jian,Swain, Greg M.

, p. E24-E32 (2003)

A catalytic electrode was prepared using a new electrically conducting and corrosion resistant carbon support material, boron-doped diamond. Fabrication of the composite electrode involves a three-step process: (i) continuous diamond thin-film deposition on a substrate, (ii) electrodeposition of Pt catalyst particles on the diamond surface, and (iii) short-term diamond deposition to entrap the metal particles into the surface microstructure. The process results in a conductive, morphologically, and microstructurally stable composite electrode containing metal particles of somewhat controlled composition, size, and catalytic activity. The metal catalyst particles were galvanostatically deposited from a K2PtCl6/HClO4 solution, with the metal particle size (50-350 nm) and distribution (~109 cm-2) being controlled by adjusting the galvanostatic deposition and secondary diamond-growth conditions. For a 300 s Pt deposition time, the estimated loading was 75.8 μg/cm2, assuming a 100% current efficiency. The composite electrode was extremely stable, both structurally and catalytically, during a 2 h polarization in 85% H3PO4 at 170°C and 0.1 A/cm2. The electrode's catalytic activity was evaluated using the O2 reduction reaction at room temperature in 0.1 M solutions of H3PO4, H2SO4, and HClO4. The kinetic parameters (Tafel slope and exchange current density) were obtained by cyclic voltammetry and were found to be comparable to those for a polycrystalline Pt electrode in the same media. Tafel slopes of -63 to -80 mV/dec were observed at low overpotentials, with the lowest slope in HClO4 and highest in H3PO4. The exchange current density ranged from 10-12 to 10-10 A/cm2, and increased in the order of H3PO4 2SO4 4. The potential advantages of the composite electrode, as compared with commercial sp2 carbon electrodes, are (i) the corrosion resistance of the diamond support, resulting in highly stable reaction centers at high potentials, current densities, and temperatures, and (ii) the fact that all of the catalyst particles are strongly anchored at the film surface and are not contained inside pores.

Temperature effect on the electrode kinetics of ethanol oxidation on Pd modified Pt electrodes and the estimation of intermediates formed in alkali medium

Mahapatra,Dutta,Datta

, p. 9097 - 9104 (2010)

Ethanol has been recognized as the ideal fuel for direct alcohol fuel cell (DAFC) systems due to its high energy density, non-toxicity and its bio-generation. However the complete conversion of ethanol to CO2 is still met with challenges, due t

In situ FTIR spectroscopic studies of (bi)sulfate adsorption on electrodes of Pt nanoparticles supported on different substrates

Zeng, Dong-Mei,Jiang, Yan-Xia,Zhou, Zhi-You,Su, Zhang-Fei,Sun, Shi-Gang

, p. 2065 - 2072 (2010)

Nanostructured Pt electrodes were prepared by electrodeposition of Pt nanoparticles on different substrates (GC, Pt and Au) under cyclic voltammetric conditions and with various number (n) of potential cycling, and were denoted as nm-Pt/S(n) (S = GC, Pt and Au). Adsorption of (bi)sulfate on the nm-Pt/S(n) was studied by in situ FTIR reflection spectroscopy. It has been revealed that the nanostructured Pt electrodes exhibit anomalous IR properties for (bi)sulfate adsorption regardless of the different reflectivity of substrate, i.e. the IR absorption of (bi)sulfate species adsorbed on all the nm-Pt/S(n) electrodes is significantly enhanced and the IR band direction is completely inverted in comparison with the same species adsorbed on a bulk Pt electrode. The two IR bands around 1200 and 1110 cm-1 attributed to adsorbed (bi)sulfate species are shifted linearly with increasing electrode potential, yielding Stark tuning rates (d over(ν, ?) / d ES) of 152.1 and 21.1 cm-1 V-1 on nm-Pt/GC(20), respectively. Along with increasing n, the Stark tuning rate of the IR band around 1200 cm-1 decreases quickly and declined to 7.6 cm-1 V-1 on nm-Pt/GC(80), while the Stark tuning rate of the IR band near 1100 cm-1 is fluctuated between 23.0 and 16.2 cm-1 V-1. It has determined that the enhancement of IR absorption of (bi)sulfate adsorbed on nanostructured Pt electrode is varied with substrate material and n, and a maximal 16-fold enhancement of the IR band near 1200 cm-1 has been measured on the nm-Pt/GC(30) electrode. The in situ FTIR studies illustrated that the adsorption of (bi)sulfate occurs mainly in the double layer potential region, and reaches a maximum around 0.80 V. The results demonstrated also that the competitive adsorption of CO and oxygen species can inhibit completely (bi)sulfate adsorption, which has evidenced a weak interaction of (bi)sulfate with nm-Pt/S(n) electrode surface.

Light-driven synthesis of hollow platinum nanospheres

Garcia, Robert M.,Song, Yujiang,Dorin, Rachel M.,Wang, Haorong,Li, Peng,Qiu, Yan,Van Swol, Frank,Shelnutt, John A.

, p. 2535 - 2537 (2008)

Hollow platinum nanospheres that are porous and have uniform shell thickness are prepared by templating platinum growth on polystyrene beads with an adsorbed porphyrin photocatalyst irradiated by visible light. The Royal Society of Chemistry.

Promotion effects in the oxidation of CO over zeolite-supported Pt nanoparticles

Visser, Tom,Nijhuis, T. Alexander,Van Der Eerden,Jenken, Karin,Ji, Yaying,Bras, Wim,Nikitenko, Sergei,Ikeda, Yasuo,Lepage, Muriel,Weckhuysen, Bert M.

, p. 3822 - 3831 (2005)

Well-defined Pt-nanoparticles with an average diameter of 1 nm supported on a series of zeolite Y samples containing different monovalent (H+, Na+, K+, Rb+, and Cs+) and divalent (Mg2+, Ca2+, Sr2+, and Ba2+) cations have been used as model systems to investigate the effect of promotor elements in the oxidation of CO in excess oxygen. Time-resolved infrared spectroscopy measurements allowed us to study the temperature-programmed desorption of CO from supported Pt nanoparticles to monitor the electronic changes in the local environment of adsorbed CO. It was found that the red shift of the linear Pt-coordinated Ca??O vibration compared to that of gas-phase CO increases with an increasing cation radius-to-charge ratio. In addition, a systematic shift from linear (L) to bridge (B) bonded Ca??O was observed for decreasing Lewis acidity, as expressed by the Kamlet-Taft parameter ?±. A decreasing ?± results in an increasing electron charge on the framework oxygen atoms and therefore an increasing electron charge on the supported Pt nanoparticles. This observation was confirmed with X-ray absorption spectroscopy, and the intensity of the experimental Pt atomic XAFS correlates with the Lewis acidity of the cation introduced. Furthermore, it was found that the CO coverage increases with increasing electron density on the Pt nanoparticles. This increasing electron density was found to result in an increased CO oxidation activity; i.e., the T50% for CO oxidation decreases with decreasing a. In other words, basic promotors facilitate the chemisorption of CO on the Pt particles. The most promoted CO oxidation catalyst is a Pt/K-Y sample, which has a T50%of 390 K and a L:B intensity ratio of 2.7. The obtained results provide guidelines to design improved CO oxidation catalysts. ? 2005 American Chemical Society.

Pt-Ru electrodeposited on gold from chloride electrolytes

Gavrilov,Petrii,Mukovnin,Smirnova,Levchenko,Tsirlina

, p. 2775 - 2784 (2007)

Voltammetric behavior of submicron-thick electrodeposited Pt-Ru on gold support is studied in sulfuric acid solution as a function of deposition potential and Pt:Ru ratio in chloride bath. In contrast to Pt-Ru, deposition of pure Ru is observed only at potentials of hydrogen evolution. The reason is found to be of kinetic nature, namely an inhibition of Ru deposition in presence of chloride. Chloride ions remain adsorbed on Ru at more negative potentials than on Pt and Au because of more negative ruthenium potential of zero free charge. Cu-UPD is applied to test the surface content of the oxidized Ru on pure Ru and various Pt-Ru surfaces. An enhancement of Ru oxohydroxides reduction in presence of Pt is observed. The electrocatalytic activity of Pt-Ru in respect to methanol oxidation correlates with the content of rechargeable surface Ru oxide. Ageing and 'training' of Pt-Ru electrodeposits under various modes is studied in order to determine the conditions of irreversible Ru oxidation. No manifestations of Ru dissolution from Pt-Ru electrodeposits in 0.5 M H2SO4 are found for anodic potential limits up to 1.1 V (RHE), in agreement with thermodynamic predictions. Electrodeposited Pt-Ru can be considered as a convenient model system for the study of Ru dissolution and crossover, as well as for determining the nature of the active surface species in the real composite catalysts for methanol oxidation.

Platinum concave nanocubes with high-index facets and their enhanced activity for oxygen reduction reaction

Yu, Taekyung,Kim, Do Youb,Zhang, Hui,Xia, Younan

, p. 2773 - 2777 (2011)

Many facets: A simple synthetic route, which is based on reduction in aqueous solution, results in Pt concave nanocubes (see picture) enclosed by high-index facets such as {510}, {720}, and {830}. The nanocrystals exhibit electrocatalytic activity (per un

Layered double hydroxides supported nanoplatinum catalyst for Suzuki coupling of aryl halides

Choudary, Boyapati M.,Roy, Moumita,Roy, Sarabindu,Kantam, M. Lakshmi

, p. 215 - 218 (2005)

Layered double hydroxides (LDH) supported nanoplatinum catalyst was prepared and employed for Suzuki cross coupling of aryl halides (iodides and bromides) with a broad range of arylboronic to afford the corresponding biaryls in good to excellent yields without using any external ligand. The catalyst is reused for several cycles with consistent activity.

Electrochemical properties of Pt coatings on Ni prepared by atomic layer deposition

Hoover, Robert R.,Tolmachev, Yuriy V.

, p. A37-A43 (2009)

Presented herein is an approach to fabrication of Pt coatings on non-noble metals with (sub)monolayer thickness. The Pt coatings were prepared using atomic layer deposition (ALD) in which Ni-disk substrate is exposed to MeCpPt Me3 and H2 in alternating cy

Support effects on the oxidation of ethanol at Pt nanoparticles

Moghaddam, Reza B.,Pickup, Peter G.

, p. 210 - 215 (2012)

The effects of metal oxide supports on ethanol oxidation have been investigated by drop coating Pt nanoparticles onto glassy carbon electrodes coated with thin layers of ruthenium oxide, tin oxide, a mixed Ru + Sn oxide, and onto an indium-tin oxide (ITO) electrode. All four oxide supports exhibited significant co-catalytic effects, with their effectiveness at low potentials increasing in the order Ru oxide ITO Ru + Sn oxide Sn oxide. However, at higher potentials (e.g. 0.4 V vs. SCE) currents were higher for Pt supported on Ru oxide or Ru + Sn oxide than on Sn oxide, revealing mechanistic differences between the roles of Ru and Sn oxide. Although Sn oxide produced very high initial activities, ITO and Ru + Sn oxide provided more stable performances.

Mohr, F.

, p. 137 - 137 (1873)

Area-selective atomic layer deposition of platinum on YSZ substrates using microcontact printed SAMs

Jiang, Xirong,Bent, Stacey F.

, p. D648-D656 (2007)

Using (methylcyclopentadienyl)trimethylplatinum (MeCpPtMe3) and oxygen as precursors, Pt has been deposited by atomic layer deposition (ALD) on the surfaces of yttria-stabilized zirconia (YSZ), a solid oxide electrolyte, as well as on oxide-covered silicon. Ex situ analyses have been carried out to examine the properties of both as-deposited and postannealed Pt films. X-ray photoelectron spectroscopy measurements demonstrate that there are no detectable impurities in the as-deposited Pt films, and four-point probe measurements show that the resistivity for a 30.2 nm film is as low as 18.3 μ cm. The use of area-selective ALD to deposit patterned Pt has also been investigated. By coating these same substrates with octadecyltrichlorosilane (ODTS) self-assembled monolayers (SAMs), Pt ALD can be successfully blocked. Furthermore, it is shown that by transferring the ODTS SAMs to the substrates by microcontact printing (μCP) using patterned stamps, platinum thin films are grown selectively on the SAM-free surface regions. Features with sizes as small as 2 μm have been deposited by this combined ALD-μCP method; the resolution is limited by the printed pattern and, likely, can be achieved at dimensions significantly smaller than a micrometer.

Addition of Hydroxide, Alkoxide, and Carboxylate Anions to Platinum-bonded Ethylene

Fanizzi, Francesco P.,Intini, Francesco P.,Maresca, Luciana,Natile, Giovanni,Gasparrini, Francesco

, p. 1019 - 1022 (1990)

The cation 2-C2H4)Cl(tmen)>+ (1) (tmen=N,N,N',N'-tetramethylethylenediamine) reacts with water and alcohol under basic conditions to give nucleophilic addition of hydroxide and alkoxide anions to ethylene and formation of (4) and respectively.Compound (4), either in solution or in the solid, undergoes a condensation reaction with formation of (5).Compound (1) reacts also with excess of acetate in water to give the ester complex Cl(tmen)> (6).Compound (6), in the solid state, slowly dissociates to acetate anion and cation (1), redissolution in chloroform restoring the original species.Compounds (3)-(6), dissolved in methanol, are transformed into (2).

Oxygen reduction at platinum modified gold electrodes

Van Brussel,Kokkinidis,Hubin,Buess-Herman

, p. 3909 - 3919 (2003)

The reduction of oxygen has been studied on polycrystalline gold electrodes modified by platinum deposited spontaneously from an aqueous K 2PtCl6 solution via the displacement of copper or lead adlayers. The change in the surface composition and morphology has been checked by XPS, AES and AFM data. The kinetic results have shown that such electrodes may present a higher catalytic activity compared to bulk platinum electrodes during a scan where the potential is made more positive and is thus clearly expressed by an hysteresis in the CV curves. The displacement of copper and lead deposits gave similar amplitudes of the hysteresis but the modified electrodes obtained via a lead deposit present a better stability upon cycling in acid solutions. The observed behaviour can be correlated to the modification of the M-OH formation and reduction on noble metals.

Seelheim, F.

, p. 479 (1879)

Comparison of extended x-ray absorption fine structure and Scherrer analysis of x-ray diffraction as methods for determining mean sizes of polydisperse nanoparticles

Calvin,Luo,Caragianis-Broadbridge,McGuinness,Anderson,Lehman,Wee,Morrison,Kurihara

, p. 1 - 3 (2005)

Curve fitting of extended x-ray absorption fine structure (EXAFS) spectra, transmission electron microscopy (TEM) imaging, and Scherrer analysis of x-ray diffraction (XRD) are compared as methods for determining the mean crystallite size in polydisperse s

X-ray structure and multinuclear NMR studies of platinum(II) complexes with 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one

?akomska, Iwona,Wojtczak, Andrzej,Sitkowski, Jerzy,Kozerski, Lech,Sz?yk, Edward

, p. 803 - 810 (2007)

New dichloride platinum(II) complexes with 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one (HmtpO) have been synthesized and characterized by thermal analysis, infrared and 1H, 13C, 15N, 195Pt NMR spectroscopy. X-ray crystal structures of cis-PtCl2(NH3)(HmtpO) (1) and cis-PtCl2(HmtpO)2 · 4H2O (2b) were determined to R = 0.0332 and R = 0.0802, respectively. In both complexes the Pt(II) ions have a square-planar geometry with two adjacent corners being occupied by two nitrogens of HmtpO molecules for 2b or NH3 and HmtpO molecules for 1, whereas the remaining adjacent corners are occupied by two chloride anions. Spectroscopic data confirm the square planar geometry with N(3) bonded HmtpO, S-bonded dimethylsulfoxide and two trans chloride anions for trans-PtCl2(dmso) · 4H2O (3).

Vapor-deposited Pt and Pd-Pt catalysts for solid acid fuel cells: Short range structure and interactions with the CsH2PO4 electrolyte

Papandrew, Alexander B.,John, Samuel St.,Elgammal, Ramez A.,Wilson, David L.,Atkinson, Robert W.,Lawton, Jamie S.,Arruda, Thomas M.,Zawodzinski, Thomas A.

, p. F464 - F469 (2016)

State-of-the-art cathodes for solid acid fuel cells (SAFCs) based on the crystalline electrolyte CsH2PO4 (CDP) are comprised of a proton-conducting CDP network coated by a vapor-deposited nanostructured catalyst. Pd-rich (85 at%Pd) Pt-Pd oxygen reduction catalysts vapor-deposited on CDP display both extraordinary activity for oxygen reduction and poor stability in cathodes for SAFCs operating at 250 °C. Similar catalysts with lower Pd content (57 at%Pd) are less active and more stable. Using X-ray absorption spectroscopy (XAS), we find that these catalysts are structurally similar and that structural variations are insufficient to explain the observed differences in activity. XAS and solid-state and solution nuclear magnetic resonance (NMR) also show that additional water-soluble chemical species are present in the Pd-rich electrode after fuel cell operation. We attribute the presence of these species to the reactivity of the Pd-rich catalyst with CsH2PO4 and suggest that these products are the cause of the observed deactivation.

Specific features of the formation of Pt(Cu) catalysts by galvanic displacement with carbon nanowalls used as support

Podlovchenko,Krivchenko,Maksimov,Gladysheva,Yashina,Evlashin,Pilevsky

, p. 137 - 144 (2012)

Microamounts of Cu are applied by the methods of electrodeposition (Cu ed) and magnetron sputtering (Cuspr) on a new carbon material, carbon nanowalls (CNW). The galvanic displacement (GD) of Cu ed and Cuspr in a PtCl42- solution (with 0.5 M H2SO4 as the supporting electrolyte) produces Pt(Cu)/CNW catalysts. The possibility of using open-circuit potential transients recorded in the course of GD for monitoring the surface layer composition is considered. The stable Pt(Cu)st samples are characterized by several methods (SEM, TEM, XPS, voltammetry, etc.). It is shown that Pt(Cu)st has structure of the core(Pt, Cu)-shell(Pt) type with the average atomic ratio Pt:Cu (%) ~ 57:43 for Cued and ~80:20 for Cuspr. The formation of the dense Pt shell is also confirmed by the data on the electrocatalytic activity of synthesized samples in the methanol oxidation reaction. The reasons for deviations in the properties of Pt(Cu) st/CNW samples formed from Cued and Cuspr are discussed. The high specific surfaces of the Pt(Cu)st/CNW catalyst obtained from Cued (>40 m2/g Pt) with the simultaneous decrease in the Pt content makes this material promising for using in the platinum-catalyzed processes (particularly, in fuel cells).

Scanning tunneling microscopy study of platinum deposited on graphite by metalorganic chemical vapor deposition

Ngo,Brandt,Williams,Kaesz

, p. 411 - 417 (1993)

The growth of thin Pt(111) films on highly oriented pyrolytic graphite (HOPG) by metalorganic chemical vapor deposition has been followed by scanning tunneling microscopy. Depositions were carried out on substrates held at 205°C and contacted with intersecting streams of H2 and of He saturated with (η5-C5H4CH3)Pt(CH3)3. The deposition was monitored by the appearance of methane in the product stream. Deposition initiated almost immediately, in contrast with earlier studies showing a significant induction period for deposition on glass. The deposits obtained after several minutes at 205°C consisted of Pt clusters with diameters ranging from 8 to 80 angstrom along with some very much larger Pt islands. The deposits were morphologically very rough with rather well defined facet orientation. The step heights of the terraces ranged from 20 to 54 angstrom. Oval shaped disks free of apparent dislocations were also observed. One of the larger crystallites investigated was 2074 × 1482 angstrom2 and 200 angstrom in height. The deposits were non-uniform throughout the deposition. The initial crystal growth under CVD was by island nucleation, followed by a growth mode that produced a random rough surface after the islands coalesced. At early stages the films are preferentially oriented with (111) crystallites parallel to the HOPG basal plane; further growth, however, leads to a poly-crystalline deposit.

Preferential CO oxidation promoted by the presence of H2 over K-Pt/Al2O3

Minemura, Yuji,Ito, Shin-Ichi,Miyao, Toshihiro,Naito, Shuichi,Tomishige, Keiichi,Kunimori, Kimio

, p. 1429 - 1431 (2005)

In preferential CO oxidation in H2-rich gas, K-Pt/Al 2O3 (K/Pt =10) was very effective in decreasing CO concentration below 10 ppm in the 375-410 K range, and the turnover frequency of the K-Pt/Al2O3

One-pot synthesis of PtSn bimetallic composites and their application as highly active catalysts for ethanol electrooxidation

Feng, Yue,Wang, Caiqin,Bin, Duan,Zhai, Chunyang,Ren, Fangfang,Yang, Ping,Du, Yukou

, p. 93 - 99 (2016)

PtSn nanoparticles with different molar ratio are fabricated by chemical reduction to form a relatively efficient catalyst for ethanol electrooxidation in an alkaline solution of KOH (1.0 m) containing C2H5OH (1.0 m). The surface composition and structure of the as-prepared catalysts are characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDX). Cyclic voltammogram (CV) and chronoamperometric (CA) measurements are used to evaluate the electrochemical activity and stability of the as-prepared catalysts. As the content of Sn in the catalysts changed, the catalysts showed different catalytic activity. The results indicate that the moderate addition of Sn can enhance the catalytic activity of Pt catalyst, and Pt3Sn1 displays the highest catalytic activity and stability among the as-synthesized PtSn nanoparticles during the electrooxidation of ethanol. Bimetallic PtSn electrocatalysts with different atomic ratios have been fabricated by a chemical reduction in a facile manner. Electrochemical measurements reveal that Pt3Sn1 catalysts exhibit the highest efficiency and stable electrocatalytic performance towards ethanol electrooxidation in an alkaline medium (see figure).

Catalytic oxidation of carbon monoxide over radiolytically prepared Pt nanoparticles supported on glass

Kapoor,Belapurkar,Mittal,Mukherjee

, p. 1654 - 1661 (2005)

Platinum nanoparticles have been prepared by radiolytic and chemical methods in the presence of stabilizer gelatin and SiO2 nanoparticles. The formation of Pt nanoparticles was confirmed using UV-vis absorption spectroscopy and transmission electron microscopy (TEM). The prepared particles were coated on the inner walls of the tubular pyrex reactor and tested for their catalytic activity for oxidation of CO. It was observed that Pt nanoparticles prepared in the presence of a stabilizer (gelatin) showed a higher tendency to adhere to the inner walls of the pyrex reactor as compared to that prepared in the presence of silica nanoparticles. The catalyst was found to be active at ≥150 °C giving CO2. Chemically reduced Pt nanoparticles stabilized on silica nanoparticles gave ~7% CO conversion per hour. However, radiolytically prepared Pt nanoparticles stabilized by gelatin gave ~10% conversion per hour. Catalytic activity of radiolytically prepared platinum catalyst, coated on the inner walls of the reactor, was evaluated as a function of CO concentration and reaction temperature. The rate of reaction increased with increase in reaction temperature and the activation energy for the reaction was found to be ~108.8 kJ mol-1. The rate of CO2 formation was almost constant (~1.5 × 10-4 mol dm -3 h-1) at constant O2 concentration (6.5 × 10-3 mol dm-3) with increase in CO concentration from 2 × 10-4 mol dm-3 to 3.25 × 10 -3 mol dm-3. The data indicate that catalytic oxidation of CO takes place by Eley-Rideal mechanism.

Asymmetrically strained hcp rhodium sublattice stabilized by 1D covalent boron chains as an efficient electrocatalyst

Li, Zhenyu,Ai, Xuan,Chen, Hui,Liang, Xiao,Li, Xiaotian,Wang, Dong,Zou, Xiaoxin

supporting information, p. 5075 - 5078 (2021/05/28)

Intermetallic rhodium boride (RhB) comprising an asymmetrically strained hcp Rh sublattice is synthesized. The covalent interaction of interstitial boron atoms is found to be the main contributor to the generation of asymmetric strains and the stabilization of the hcp Rh sublattice. In addition, RhB is identified as a hydrogen-evolving eletrocatalyst with Pt-like activity, because the Rh(d)-B(s,p) orbital hybridization induces an optimized electronic structure.

New perspective of a nano-metal preparation pathway based on the hexahydro-closo-hexaborate anion

Liu, Jun,Zhang, Haibo,Zhao, Xue

, p. 33444 - 33449 (2020/09/21)

Today, metal-based nanomaterials play an increasingly important role in the energy, environment, medical and health fields. In order to meet the needs of various fields, it is necessary to continuously develop advanced technologies for preparing metal-based materials. Inspired by previous research, the results of a proof-of-concept experiment show that the hexahydro-closo-hexaborate anion (closo-[B6H7]?) in the borane cluster family has properties similar to NaBH4.Closo-[B6H7]?can not only convert common precious metal ions such as Au3+, Pd2+, Pt4+and Ag+to the corresponding zero-valence state, but also convert some non-precious metals such as Cu2+and Ni2+to the zero-valent or oxidation state.Closo-[B6H7]?moderate reduction to cause rapid aggregation of metal-based materials is not easy compared with NaBH4. Compared withcloso-[B12H12]2?,closo-[B6H7]?achieves the conversion of Pt4+to Pt0under ambient conditions, and its reduction performance extends to non-precious metals. The excellent stability and easy modification characteristics determine the universality of thecloso-[B6H7]?reduction strategy for metal ions.

Synthesis, physico-chemical characterization and bioevaluation of Ni(II), Pd(II), and Pt(II) complexes with 1-(o-tolyl)biguanide: Antimicrobial and antitumor studies

Nu??, Ileana,Badea, Mihaela,Chifiriuc, Mariana Carmen,Bleotu, Coralia,Popa, Marcela,Daniliuc, Constantin-Gabriel,Olar, Rodica

, (2020/06/02)

New complexes of type [M(tbg)2]Cl2 [tbg = 1-(o-tolyl)biguanide; M = Ni(II), Pd(II), and Pt(II)] were synthesized and characterized to develop new biologically active compounds. The features of the complexes were assigned from microanalytical and thermal data. The NMR, FT-IR, and UV-Vis spectra were established by comparison with HtbgCl. All complexes exhibit a square-planar geometry resulting from the chelating behavior of tbg. The HtbgCl and [Ni(tbg)2]Cl2 complexes were fully characterized by single-crystal X-ray diffraction. The HtbgCl species crystallize in the monoclinic C2/c spatial group, while the Ni(II) complex adopts an orthorhombic Pna21 spatial group. The structure is stabilized by a complex hydrogen bonds network. The in vitro antimicrobial assays revealed improved antimicrobial activity for complexes in comparison with the ligand against both planktonic and biofilm embedded microbial cells. The most efficient compound, showing the largest spectrum of antimicrobial activity, including Gram-positive and Gram-negative bacteria, as well as fungal strains, in both planktonic and biofilm growth states was the Pd(II) complex, followed by the Pt(II) complex. The Pt(II) compound exhibited the most significant antiproliferative activity on the human cervical cancer SiHa cell line, inducing a cell cycle arrest in the G2/M phase.

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