10025-99-7

Basic information

• Product Name: dipotassium tetrachloroplatinate
• Synonyms: PLATINOUS POTASSIUM CHLORIDE;PLATINUM(II) DIPOTASSIUM TETRACHLORIDE;PLATINUM(II) POTASSIUM CHLORIDE;PLATINUM (OUS) POTASSIUM CHLORIDE;PLATINUM POTASSIUM CHLORIDE;POTASSIUM CHLOROPLATINITE;POTASSIUM PLATINUM TETRACHLORIDE;POTASSIUM PLATINOUS CHLORIDE
• CAS NO: 10025-99-7
• Molecular Formula: Cl₄Pt*2K
• Molecular Weight: 415.09
• EINECS: 233-050-9
• Product Categories: Inorganics;halometallate salt;Materials Science;Metal and Ceramic Science;Potassium Salts;Salts;chemical reaction,pharm,electronic,materials
• Mol File: 10025-99-7.mol
• Article Data: 9

Chemical Properties

• Melting Point: 250°C
• Appearance: Red-brown/Crystals or Crystalline Powder
• Density: 3.38 g/mL at 25 °C(lit.)
• Vapor Pressure: 33900mmHg at 25°C
• Storage Temp.: Inert atmosphere,Room Temperature
• Water Solubility: 10 g/L (20 ºC)
• Sensitive: Hygroscopic
• Stability: Stable. Incompatible with acids, strong oxidizing agents.
• Merck: 14,7682
• CAS DataBase Reference: dipotassium tetrachloroplatinate(CAS DataBase Reference)
• NIST Chemistry Reference: dipotassium tetrachloroplatinate(10025-99-7)
• EPA Substance Registry System: dipotassium tetrachloroplatinate(10025-99-7)

Safety Data

• Hazard Codes: T,Xi
• Statements: 25-38-41-42/43
• Safety Statements: 22-26-36/37/39-45
• RIDADR: UN 3288 6.1/PG 3
• WGK Germany: 1
• RTECS: TP1850000
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: Ⅲ
• Hazardous Substances Data: 10025-99-7(Hazardous Substances Data)

Usage

Chemical Properties

Red/Brown, Tetragonal Crystals

Uses

Different sources of media describe the Uses of 10025-99-7 differently. You can refer to the following data:
1. In photography, in acid toning baths.
2. Potassium tetrachloroplatinate solution is used in the preparation of platinum (Pt) nanoparticles. Ligands like ammonia or triphenyl phosphine can able to replace the chloride ligands to afford various derivatives. The replacement by ammonia results in the preparation of cisplatin, which is used in the cancer treatment. Further, it is used as catalyst in the hydroarylation reaction.

General Description

Potassium tetrachloroplatinate(II) is a ruby red crystalline solid and can be prepared by reacting potassium hexachloroplatinate (IV) with cuprous chloride.

Flammability and Explosibility

Nonflammable

Safety Profile

Human poison by ingestion. Poison experimentally by intraperitoneal route. Corrosive to human skin by intradermal route. Mutation data reported. Human systemic effects: eosinophha, gastritis, renal function tests depressed. When heated to decomposition it emits toxic fumes of Cland K2O. Used as a catalyst for hydroformulations, photocatalysts, and dissociation of water. See also PLATINUM COMPOUNDS.

Purification Methods

It forms crystals from aqueous 0.75M HCl (20mL/g) between 100o and 0o. Wash them with ice-cold water and dry.

InChI:InChI=1/4ClH.Pt/h4*1H;/q;;;;+2/p-4

Synthetic route

potassium hexachloropalatinate(IV) → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With potassium oxalate In water byproducts: KCl; 24-36 h refluxing of K2C2O4 and aq. K2(PtCl6) suspn. till there is no pptn. on cooling, addn. of K2C2O4*H2O, boiling for few h, filtration, vapn. in water bath to 1/3-1/4 of volume, cooling, careful further vapn.;; recrystn. from water; pure K2(PtCl4);;	90%
With hydrazinium sulfate In water hydrazine sulfate (2.06 mmol) added to Pt compd. (4.12 mmol) in water, mixt. brought to boiling and heated on water bath for 40 min; filtered, filtrate treated with acetone/Et2O (1/1), solid sepd. and washed with acetone and Et2O; elem. anal.;	86%
With potassium bisulfite; potassium chloride In not given byproducts: potassium sulfate; warming KCl containing K2(PtCl6) with KHSO3 soln.;;

dihydrogen hexachloroplatinate + potassium chloride → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With sulfur dioxide In water introduction of SO2 into aq. H2(PtCl6) soln. at water bath temp. till there is no pptn. with NH4Cl soln., cooling, addn. of KCl soln. with stirring, storage for 24 hours;; sucking off, washing with small amt. of H2O, washing with alcohol till there is no acidic reaction, drying in darkness at ambient temp.;;	93%
With sulfur dioxide In water byproducts: KHSO4, KCl; introduction of SO2 into aq. H2(PtCl6) soln. at water bath temp. till there is no pptn. with NH4Cl soln., cooling, addn. of KCl soln. with stirring, storage for 24 hours;; sucking off, washing with small amt. of H2O, washing with alcohol till there is no acidic reaction, drying in darkness at ambient temp.; K2(PtCl4) is contaminated with KHSO4 and KCl;;	67%
With sulfur dioxide In not given recrystn. from H2O and HCl soln., drying at 80-90°C to constant weight;;
With sulfur dioxide In not given H2(PtCl6) from purest Pt;; sulfate free Pt(Cl4);;

potassium amminetrichloroplatinate → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrogenchloride In hydrogenchloride byproducts: NH4Cl; heating with HCl-soln. for a longer period of time;;
With HCl In hydrogenchloride byproducts: NH4Cl; heating with HCl-soln. for a longer period of time;;
In hydrogenchloride

potassium platinum(IV) oxosulfite*H2O → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrogenchloride In not given byproducts: K2{PtCl6}, SO2;
With hydrogenchloride In not given byproducts: K2SO4; neutralization of alcalic K2(Pt(SO3)2O)*H2O soln. with HCl soln.;;
With HCl In not given byproducts: K2SO4; neutralization of alcalic K2(Pt(SO3)2O)*H2O soln. with HCl soln.;;
With HCl In not given byproducts: K2{PtCl6}, SO2;

K(1+)*Pt(NHCH(COO)C3H5(OH))Cl2(1-)=K[Pt(NHCH(COO)C3H5(OH))Cl2] + cesium chloride → potassium tetrachloroplatinate(II) (10025-99-7) + Cs(1+)*Pt(NHCH(COO)C3H5(OH))Cl2(1-)=Cs[Pt(NHCH(COO)C3H5(OH))Cl2]

Conditions	Yield
With cesium hydroxide In water byproducts: KCl; Pt-complex soln. evapn. almost to dryness, water/alcohol mixt. (1:1) addn., ppt. (KCl and K2PtCl4) filtration off, CsCl (better CsCl/CsOH) aq. soln. addn. to filtrate, pptn.; ppt. filtration off, washing (cold water, alcohol), drying (110°C); elem. anal.;	A n/a B 52%

potassium bis(oxalato)platinate(II) dihydrate → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrogenchloride In water decompn. of aq. soln. of yellow K2(Pt(C2O4)2)*2H2O by excessive aq. HCl soln.;;
With HCl In water decompn. of aq. soln. of yellow K2(Pt(C2O4)2)*2H2O by excessive aq. HCl soln.;;

K{Pt(acetonitrile)Cl3} (114490-06-1) → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrogenchloride In hydrogenchloride heating with HCl-soln.;;
With HCl In hydrogenchloride heating with HCl-soln.;;

hydrogen chloroplatinate(II) + potassium chloride → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
In water addn. of KCl to purified aq. H2(PtCl4) soln. (heating H2(PtCl6*6H2O), solving formed PtCl2 in aq. HCl soln., purifn. over Ba(PtCl4)), vapn.;; drying over H2SO4 or at 100°C;;
In water addn. of KCl to aq. H2(PtCl4) soln. (heating H2(PtCl6)*6H2O), solving formed PtCl2 in aq. HCl soln.), vaporization;;

K{Ptaca2Cl} → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrogenchloride In not given addn. of HCl-soln.;;

dihydrogen hexachloroplatinate(IV) hexahydrate + potassium chloride → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With barium carbonate In water byproducts: BaSO4, K2{PtCl6}; exact neutralization of H2(PtCl6)*6H2O soln. with BaCO3, reduction with BaS2O6 in aq. soln., addn. of KCl, filtration, crystn.;;

potassium (η2-allyltrimethylsilane)trichloroplatinate(II) (56112-08-4) → potassium tetrachloroplatinate(II) (10025-99-7) + K{PtprCl3} (12075-59-1)

Conditions	Yield
With hydrogenchloride In hydrogenchloride; acetone byproducts: KCl; several drops of 6 N HCl adding to Pt complex soln., allowing to stand for 24 h, additional drop of 6 N HCl adding to complete the reaction, after 12 h ppt. collecting by centrifugation, washing with acetone, filtrate evapg.; purified by pptn. with Et2O, identified by elem. anal.;

2K(1+)*Pt(NH2CH2CH2SO3)2Cl2(2-)*5H2O=K2(Pt(NH2CH2CH2SO3)2Cl2)*5H2O → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrochloric acid In water byproducts: taurine; dild. HCl (80°C, 2 h);

2K(1+)*[Pt(H2NC2H4SO3)2Cl2](2-)*2H2O=K2[Pt(H2NC2H4SO3)2Cl2]*2H2O → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrochloric acid In water byproducts: taurine; dild. acid (80°C, 2 h);

potassium platinum(II) chloride*xH2O=Kaliumplatin(II)-chlorid*xH2O → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
In neat (no solvent) byproducts: H2O; storage over H2SO4 or heating at 100°C;;
In neat (no solvent) byproducts: H2O; storage over H2SO4 or heating at 100°C;;

potassium hexachloropalatinate(IV) + potassium chloride + platinum (7440-06-4) → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
Kinetics; 850°C, powdered platinum;
In melt dissolution of Pt in melt;;
In melt dissolution of Pt in melt;;

platinum(II)-oxide hydrate → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
With hydrogenchloride byproducts: H2O;

potassium nitrite (7758-09-0) + cis-potassium platinum(II) dinitrochloride=cis-Kaliumplatin(II)-dinitrochlorid → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
In water

potassium hexachloropalatinate(IV) + transplatin (26035-31-4, 14913-33-8, 15663-27-1) → potassium tetrachloroplatinate(II) (10025-99-7) + trans-diamminetetrachloroplatinum(IV) (16893-05-3, 16893-06-4, 16949-90-9)

Conditions	Yield
In water heating with K2(PtCl6);;

potassium trichloro(nicotinic acid)platinate(II) → potassium tetrachloroplatinate(II) (10025-99-7) + cis-dichlorobis(nicotinic acid)platinum(II)

Conditions	Yield
In neat (no solvent) heating to 155°C; treatment with water;

[pyrazolium]2[PtCl4] + potassium hydroxide → potassium tetrachloroplatinate(II) (10025-99-7) + cis-Pt(pyrazole)2Cl2 (74219-70-8, 137940-62-6, 74175-18-1)

Conditions	Yield
In neat (no solvent, solid phase) byproducts: C3H4N2; ground;	A n/a B 1%

potassium chloride + chlorine (7782-50-5) + platinum (7440-06-4) → potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
In neat (no solvent) Kinetics; Chlorine bubbled through the melt.;

diacetonitriledichloridopalladium(II) (21264-32-4, 13869-38-0, 13869-42-6) + potassium chloride → potassium tetrachloroplatinate(II) (10025-99-7) + K{Pt(acetonitrile)Cl3} (114490-06-1)

Conditions	Yield
In water react. of Pt-complex and KCl in water (molar ratio 1:3);

potassium chloride + chlorine (7782-50-5) + platinum (7440-06-4) → potassium hexachloropalatinate(IV) + potassium tetrachloroplatinate(II) (10025-99-7)

Conditions	Yield
In neat (no solvent) Kinetics; mixt. of Pt and KCl charged into a quartz cell which is placed in a resistance furnace, when KCl melted, Cl2 is bubbled through the melt at a temp. of 800-1000°C; x-ray diffraction;

potassium tetrachloroplatinate(II) (10025-99-7) + potassium iodide (7681-11-0) → potassium tetraiodoplatinate

Conditions	Yield
In water at 50℃; for 0.0833333h; Darkness;	100%
In water at 30℃; for 0.5h;
In water for 0.5h;

potassium tetrachloroplatinate(II) (10025-99-7) + triphenylphosphine (603-35-0) → cis-dichlorobis(triphenylphosphine)platinum(II) (10199-34-5, 14056-88-3, 15604-36-1)

Conditions	Yield
Ar atmosphere; procedure described by Brune et al., Chem. Ber. 117 (1984) 2791-2802;	100%
In ethanol; water stirred in darkness at room temp. for 24 h; ppt. washed (water, ethanol, diethyl ether), washed (CHCl3), ppt. collected, soln. stored in light, ppt. collected; elem. anal.;	98%
In dichloromethane other Radiation; N2; ligand (0.0921 mmol) and K2PtCl4 (0.0721 mmol) in DCM, sealed, microwave irradaited at 145°C for 50 min; soln. layered (Et2O), recrystd. (CHCl3/heptane), filtered off, dried;	93.2%
In ethanol; water an aq. soln. of K2(PtCl4) is shaken with a hot alcoholic soln. of P(C6H5)3;; washing with H2O, alcohol and ether;;

potassium tetrachloroplatinate(II) (10025-99-7) + 4,4'-diethoxy-2,2'-bipyridine (53094-09-0) → dichloro(4,4'-diethoxy-2,2'-bipyridine)platinum (257278-08-3)

Conditions	Yield
In water reflux (75 min); filtration, washing (H2O), drying (vac.), recrystn. (satd. hot DMF soln.); elem. anal.;	100%

potassium tetrachloroplatinate(II) (10025-99-7) + dimethyl sulfoxide (67-68-5) → dichlorobis(dimethyl sulfoxide)platinum(II)

Conditions	Yield
In water for 2h;	100%
In water	91%
In water at 20℃;	90%

potassium tetrachloroplatinate(II) (10025-99-7) + Sodium thiosulfate pentahydrate + thiourea (17356-08-0) → {Ptth3S2O3}

Conditions	Yield
In water addn. of a soln. of thiourea to a soln.-mixture of K2(PtCl4) and Na2S2O3*5H2O in a small amount of H2O after storing approx. 2 h at room temperature; pptn.;;	100%
In water addn. of a soln. of thiourea to a soln.-mixture of K2(PtCl4) and Na2S2O3*5H2O in a small amount of H2O after storing approx. 2 h at room temperature; pptn.;;	100%

potassium tetrachloroplatinate(II) (10025-99-7) + bromine (7726-95-6) → 2K(1+)*PtCl4Br2(2-)=K2{PtCl4Br2}

Conditions

Yield

With tetrabutyl-ammonium chloride In dichloromethane addn. (TBA)Cl to Pt-compd. in 6 N HCl, extn. into CH2Cl2, washing org. phase (H2O), drying (Na2SO4), evapn. of solvent, dissolving residue in acetone, pptn. of TBA-complex (addn. Et2O, cooling), dissolving (CH2Cl2),addn. of Br2 in CH2Cl2 (room temp.); immediate layering of the soln. with Et2O, crystn. on standing in a refrigerator, washing with Et2O and drying in vac., pptn. of the K-complex by addn. of K-trichloroacetate in MeOH to the TBA-complex dissolved in CH2Cl2;

100%

potassium tetrachloroplatinate(II) (10025-99-7) + trisodium tris(3-sulfophenyl)phosphine (63995-70-0) → [Pt(tris(3-sulfonatophenyl)phosphane sodium salt)3Cl]Cl

Conditions	Yield
In water-d2 at 25℃; for 0.25h; Inert atmosphere;	100%

potassium tetrachloroplatinate(II) (10025-99-7) + tris(4-methyl-3-sulfonatophenyl)phosphane sodium salt → [Pt(tris(4-methyl-3-sulfonatophenyl)phosphane sodium salt)3Cl]Cl

Conditions	Yield
In water-d2 at 25℃; for 0.25h; Inert atmosphere;	100%

potassium tetrachloroplatinate(II) (10025-99-7) + 2-(3-(3-(pyridin-2-yl)phenoxy)phenyl)pyridine → C22H14N2OPt

Conditions	Yield
With tetrabutylammomium bromide In 2-ethoxy-ethanol for 72h; Reflux;	100%

potassium tetrachloroplatinate(II) (10025-99-7) + ([1-benzyl-3-methyl]imidazolyl-2-ene)silver(I) bromide + dimethyl sulfoxide (67-68-5) → cis-(1-methyl-3-benzylimidazol-2-ylidene)PtBr2(DMSO)

Conditions	Yield
at 60℃; for 24h;	100%

potassium cyanide + potassium tetrachloroplatinate(II) (10025-99-7) + C110H189N41O20S → [Pt(dpyTSCL-sC18)(CN)]

Conditions	Yield
In water at 20℃; for 1h;	100%

potassium tetrachloroplatinate(II) (10025-99-7) + C110H189N41O20S → [Pt(dpyTSCL-sC18)Cl]

Conditions	Yield
In water at 20℃; for 2h;	100%

3,5-bis[(2-methoxy)ethylaminomethyl]pyrazole dihydrochloride + potassium tetrachloroplatinate(II) (10025-99-7) + potassium iodide (7681-11-0) → μ-iodo(μ-1,1'-[(1H-pyrazole-1-ido-3,5-diyl)bis(methylene)]bis(2-methoxyethylamino))diiododiplatinum(II) (925430-87-1)

Conditions	Yield
With sodium hydroxide In water to stirred aq. soln. K2PtCl4 in water KI was added, soln. ligand in water and NaOH were added dropwise, stirred dor 28 h at room temp.; ppt. was filtered, washed with water and dried at 60°C in high vac.; elem. anal.;	99.7%

hydrogenchloride (7647-01-0) + potassium tetrachloroplatinate(II) (10025-99-7) + 5,5'-dimethyl-2,2'-bipyridine (1762-34-1) → dichlorido(5,5'-dimethyl-2,2'-bipyridine)platinum(II) (54806-35-8)

Conditions	Yield
In water elem. anal.;	99.6%

2-phenylpyridine (1008-89-5) + potassium tetrachloroplatinate(II) (10025-99-7) → κ2(N,C(2))-(2-phenylpyridine)-κ1(N)-(2-phenylpyridine)chloroplatinum(II)

Conditions	Yield
In 2-ethoxy-ethanol; water other Radiation; 2-phenylpyridine (2.2 mmol) treated with K2PtCl4 (1 mmol) in degassed soln. (N2) of 2-ethoxyethanol/H2O (3:1, v/v); irradiated with microwave radiation (250 W, 1 min, max. temp. 110°C); cooled; filtered off; recrystd. from CH2Cl2/EtOH; elem. anal.;	99%
In 2-ethoxy-ethanol; water aq. degassed soln. of K2PtCl4 (1.2 mmol) (3 ml) added to degassed soln. of 2-phenylpyridine (2.4 mmol) in 2-ethoxyethanol (9 ml) under N2 (stirring); heated (80°C) overnight; cooled in ice bath; distd. H2O added; ppt. filtered off; washed with cold EtOH; dried (vac.); crystd. from CH2Cl2/EtOH;	95%
In acetic acid suspn. ligand and K2(PtCl4) in AcOH was heated at 75°C for 15 h; soln. was cooled to room temp., evapd., residue was dissolved in CH2Cl2,washed with 2.5 M HCl, water, dried over MgSO4, soln. was concd., Et2O was added, ppt. was collected by filtration; elem. anal.;	82%

potassium tetrachloroplatinate(II) (10025-99-7) + 18-crown-6 ether (17455-13-9) → (18-crown-6)potassium-tetrachloroplatinate(II)

Conditions	Yield
In dichloromethane Ar-atmosphere; strirring to dissoln. (2-3 h); concn. (vac.), pptn. on hexane addn., washing (hexane), drying (vac.); elem. anal.;	99%
In dichloromethane excess of ligand, stirring (2 h, room temp.); concn. (vac.), layering (Et2O), filtn., washing (Et2O), drying (vac.); elem. anal.;	99%

potassium tetrachloroplatinate(II) (10025-99-7) + (phenylthio)acetic acid sodium salt (1641-35-6) → {Ptphthg2}

Conditions	Yield
In not given formation on mixing of hot solns. of K2(PtCl4) and Na-(phenylthio)acetate;;	99%

potassium tetrachloroplatinate(II) (10025-99-7) + 2,2'-Bipyrimidine (34671-83-5) → dichloro-(2,2'-bipyrimidyl) platinum(II) (68976-09-0)

Conditions	Yield
With air In water at 20℃; Inert atmosphere;	99%
In water at 20℃; for 12h;	92%
In water at 20℃;	89%
With 18-crown-6 ether In water ligand dissolved in min. amt. of H2O over 15 min; added to soln. of K2PtCl4 and 18-crown-6 in H2O; filtered; ppt. washed with min. amt. of cold H2O; dried at 100°C for 5-6 h; elem. anal.;	60%

potassium tetrachloroplatinate(II) (10025-99-7) + tetramethlyammonium chloride (75-57-0) → tetramethylammonium tetrachloroplatinate(II)

Conditions	Yield
In water	99%

potassium tetrachloroplatinate(II) (10025-99-7) → tetramethylammonium tetrachloroplatinate(II)

Conditions	Yield
In water passing K-salt through cation exchanger (Me4N-form);	99%

potassium tetrachloroplatinate(II) (10025-99-7) + nicotinamide (98-92-0) → Pt(C5H4NCONH2)4(2+)*2Cl(1-) = [Pt(C5H4NCONH2)4]Cl2

Conditions	Yield
In water	99%

Upstream product

• 26035-31-4 transplatin 
• 7758-09-0 potassium nitrite 
• 15690-63-8 cesium chloride 
• 56112-08-4 potassium (η2-allyltrimethylsilane)trichloroplatinate(II) 
• 114490-06-1 K{Pt(acetonitrile)Cl₃} 
• 21264-32-4 diacetonitriledichloridopalladium(II) 
• 7782-50-5 chlorine 
• 7440-06-4 platinum 

Downstream Products

• 7790-39-8 platinum(II) iodide 
• 12080-32-9 dichloro(1,5-cyclooctadiene)platinum(ll) 
• 12080-32-9 dichloro( 1,5-cyclooctadiene)platinum(ll) 
• 15663-27-1 cisplatin 
• 35273-41-7 dichlorido(4,7-diphenyl-1,10-phenanthroline)platinum(II) 
• 76121-44-3 K⁽¹⁺⁾*Pt(C₆H₅NH₂)Cl₃^(1-)=K(Pt(C₆H₅NH₂)Cl₃) 
• 12012-50-9 potassium trichloro(ethene)platinate(II) 
• 13454-96-1 platinum(IV) chloride 
• 14221-02-4 tetrakis(triphenylphosphine)platinum 
• 15227-42-6 cis-dichlorobis(pyridine)platinum(II) 
• 7440-06-4 platinum 

Relevant articles and documents

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Pt(II) and Pd(II) methyl- and chloro-complexes with the tridentate N-donor ligands ((pyridin-2-yl)methylene)quinolin-8-amine (NNPy), ((pyridin-2-yl) ethylidene)quinolin-8-yl-amine (NNMePy), (phenyl(pyridin-2-yl)methylene) quinolin-8-yl-amine (NNPhPy), ((thiazol-2-yl)methylene)quinolin-8-amine (NNTh) and ((imidazol-4-yl)methylene)quinolin-8-amine (NNImH) were prepared by metal-assisted condensation of 8-aminoquinoline and an ortho-substituted aldehydo- or keto- N-heterocycle. Preliminary reactivity studies involving the coordinated tridentate N-donors, the chloro-ligand and the M-CH3 bond were carried out, leading to the synthesis of several new complexes. During these studies, the formation of a novel five-coordinate Pt(II) carbonyl-complex was observed.

Coordination chemistry of platinum and palladium in the solid-state: Synthesis of imidazole and pyrazole complexes

Solid-state reactions of palladium(ii) and platinum(ii) chloride complexes with imidazole (Him) and pyrazole (Hpz) or their hydrochloride salts are shown to produce metal complex salts and coordination compounds. Thus, K 2[MCl4] or MCl2 can be ground with imidazolium chloride ([H2im]Cl) to produce the salts [H2im] 2[MCl4] (M = Pd, 1; Pt, 5), which can then be dehydrochlorinated in the solid state to produce the coordination compounds trans-[PdCl2(Him)2] 3 or cis-[PtCl2(Him) 2] 6. The complex cis-[PdCl2(Him)2] 2 is produced when Pd(OAc)2 is ground with [H2im]Cl. Reaction of platinum chloride reagents with imidazole (Him) also produces cis-[PtCl 2(Him)2] 6, but reaction of imidazole with analogous palladium chloride reagents first produces [Pd(Him)4]Cl24 which then slowly converts to trans-[PdCl2(Him)2] 3. Grinding pyrazolium chloride with K2[MCl4] produces [H2pz]2[MCl4] (M = Pd, 7; Pt, 10), which may also be dehydrochlorinated in the solid state to produce the coordination compounds trans-[PdCl2(Hpz)2] 8 or cis-[PtCl 2(Hpz)2] 11. Grinding K2[PdCl4] or PdCl2 with pyrazole gives [Pd(Hpz)4]Cl29, which is then slowly converted into trans-[PdCl2(Hpz)2] 8. Grinding PtCl2 with Hpz generates [Pt(Hpz)4]Cl 212, but using K2PtCl4 as the metal source does not generate the same product. The single-crystal structures of 8, a new polymorph of 11 and [H2pz]2[PtCl6] ·2H2O (isolated as a decomposition product) are reported for the first time, and the structures of 5 and 10 have been solved ab ibitio from XRPD data.

Dielectric constant and dielectric relaxation in aqueous solutions of K2[PdCl4] and K2[PtCl4]

The MW-dielectric properties of aqueous solutions of K 2[PtCl4] (I) and K2[PdCl4] (II) were studied at 298 and 313 K in the frequency range (12-25 GHz) corresponding to the maximum dielectric constant dispersion

Synthesis and Spectral Study of Isomeric Platinum (II) Complexes of β-Aminoethanesulfonic Acid

The reactivity of cis- and trans-K2[Pt(Tau)2Cl2].nH2O [Tau = H2NC2H4SO3(1-); n = 5 (cis) and 1 (trans)] with respect to reagents of different natures are studied. The geometrical isomers of K2[Pt(Tau)2X2].nH2O (X = OH(1-), Cl(1-), Br(1-), I(1-), NCS(1-), and NO2(!-); n = 0 - 5), Pt(NH3)2(Tau)2], and K2[Pt(Tau)2(OH)2] are isolated. The [Pt(Tau)2Cl2].nH2O complex is obtained by an ion-exchange reaction. The composition and properties of the products isolated give evidence that the substitution reactions proceed with the conservation of the geometrical configuration of theinitial platinum taurine complexes. A comparative analysis of the elect ronic absorption spectra of the synthesised conmplexes is performed.

REACTION OF PLATINUM WITH CHLORINE IN A POTASSIUM CHLORIDE MELT.

In the paper results are presented of a study of the chemical forms in which platinum is found in the products of its chlorination in a KCl melt, and also data on the kinetics of this reaction. The temperature range studied was 800-1000 degree C. The kinetics of the process were studied by a gravimetric method. The results of chemical analysis indicated that the change in weight of the reaction mixture was proportional to the change in the concentration of platinum ions in the melt.

HYDROLYSIS OF ALLYLSILANES COORDINATED TO PLATINUM(II)

Allylsilane complexes of formula, K, and trans- where py = a pyridine base, have been prepared, isolated and hydrolyzed.In the cases studied the major product of the hydrolysis is an allyl-platinum(II) complex rather than propene.Propene complexes can be formed, however, if the hydrolysis is conducted at sufficiently low pH.

STABILITY OF THE 1,4-BIS(2'-HALOETHYL)-1,4-DIAZABICYCLOYHEPTANE DICATION

Certain derivatives of the 1,4-bis(2'-haloethyl-1,4-diazabicycloheptane dication system ranging from dibromide 2b to ethanesulfonate 2g were found to be quite stable under essentially neutral conditions.A very convenient synthesis of 1,4-bis(2'-chl