CAS No.3236-82-6,NIOBIUM ETHOXIDE Suppliers

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Basic Information

CAS No.:

3236-82-6

Name:

NIOBIUM ETHOXIDE

Article Data:

Molecular Structure:

Formula:

C2H6 O . 1/5 Nb

Molecular Weight:

318.212

Synonyms:

Ethanol,niobium(5+) salt (9CI); Ethyl alcohol, niobium(5+) salt (8CI); Diniobiumdecaethoxide; Niobium ethoxide (Nb(OEt)5); Niobium ethoxide Nb(OC2H5)5; Niobiumpentaethoxide; Niobium(V) ethoxide; Pentaethoxyniobium; Pentakis(ethoxy)niobium

Density:

g/cm³

Melting Point:

6 °C(lit.)

Boiling Point:

140-142 °C0.1 mm Hg(lit.)

Flash Point:

8.9°C

Solubility:

Soluble in organic solvents. Decomposes in water.Miscible with organic solvents.

Appearance:

yellow to orange-brown liquid

Hazard Symbols:

Risk Codes:

10-34

Safety:

Hazard Codes	C
Risk Statements	10-34
Safety Statements	26-36/37/39-45
RIDADR	UN 2920 8/PG 2
WGK Germany	3
F	10-21
TSCA	No
HazardClass	3
PackingGroup	III

PSA:

46.15000

LogP:

2.43600

Synthetic route

: 10026-12-7
niobium pentachloride

A: Nb(5+)*2Cl(1-)*3(OC2H5)(1-)=NbCl2(OC2H5)3

B: Nb(5+)*Cl(1-)*4OC2H5(1-)=NbCl(OC2H5)4

C: Nb(5+)*4Cl(1-)*OC2H5(1-)=Nb(OC2H5)Cl4

D: 3236-82-6
niobium(V) ethoxide

Conditions

Conditions	Yield
With ethanol In ethanol N2-atmosphere; 0.5 M NbCl5; varying product ratio depending on temperature;

...Expand

: 64-17-5
ethanol

: 10026-12-7
niobium pentachloride

: 3236-82-6
niobium(V) ethoxide

Conditions

Conditions	Yield
In benzene introduction of dry NH3 into boiling soln. of NbCl5 in benzene containing CH3OH;; evaporization of soln.;;
With ammonia In toluene byproducts: NH4Cl; to a suspn. of NbCl5 added ethanol and ammonia; filtered, vac. distillated (158°C, 0.1 mbar);

: 34800-16-3
NbCl5*P(C4H9)3

: 64-17-5
ethanol

: 3236-82-6
niobium(V) ethoxide

Conditions

Conditions	Yield
With ammonia In benzene alcoholysis on passing NH3 through the reaction soln.;;
With NH3 In benzene alcoholysis on passing NH3 through the reaction soln.;;

: Nb(5+)*Br(1-)*4(OC2H5)(1-)=NbBr(OC2H5)4

A: 3236-82-6
niobium(V) ethoxide

B: 13478-45-0
niobium pentabromide

Conditions

Conditions	Yield
In neat (no solvent) heating;;

: 3236-82-6
niobium(V) ethoxide

: 603-33-8
triphenylbismuthane

: 69-72-7
salicylic acid

: Bi2Nb2(μ-O)(sal)4(Hsal)4(OEt)2

Conditions

Conditions	Yield
In toluene under Ar; suspn. of Bi deriv. and salicylic acid in PhMe refluxed for 1 h, cooled to room temp., added dropwise Nb ethoxide, stirred at room temp. for 24 h; concd. in vac., washed (Et2O), dried in vac., recrystd. from CH2Cl2/hexane; elem. anal.;	69%

...Expand

: 60774-07-4
4-methyl-2-mercaptophenol

: 3236-82-6
niobium(V) ethoxide

: 121-44-8
triethylamine

: 188349-10-2
HN(C2H5)3(1+)*Nb(C7H6OS)3(1-) = (HN(C2H5)3)[Nb(C7H6OS)3]

Conditions

Conditions	Yield
In methanol byproducts: EtOH; (inert atmosphere); stirring (1 h); evapn. (vac.), stirring with Et2O for several h, filtration, recrystn. (MeCN/Et2O); elem. anal.;	67%

...Expand

: 3236-82-6
niobium(V) ethoxide

: 603-33-8
triphenylbismuthane

: 69-72-7
salicylic acid

: BiNb4(μ-O)4(sal)4(Hsal)3(Oi-Pr)4

Conditions

Conditions	Yield
With Mg(OOCCH3)2 In toluene under Ar; suspn. of Bi deriv. and salicylic acid in PhMe refluxed for 1 h, concd. in vac., redissolved in 2-propanol, added Mg salt, added dropwise Nb ethoxide, left at room temp. for 14 d; filtered, redissolved in CH2Cl2, filtered (Celite), added hexane; elem. anal.;	57%
With NaOOCCH3 In toluene under Ar; react. of Bi deriv. with Nb ethoxide and ligand;	0%
In toluene under Ar; react. of Bi deriv. with Nb ethoxide and ligand;	0%

...Expand

: 3385-94-2
hexamethyldisilathiane

: 56-34-8
tetraethylammonium chloride

: 3236-82-6
niobium(V) ethoxide

: 95979-72-9
4(C2H5)4N(1+)*Nb6S17(4-)*3CH3CN=((C2H5)4N)4[Nb6S17]*3CH3CN

Conditions

Conditions	Yield
In acetonitrile byproducts: Me3SiOEt, Me3SiCl; a mixt. of Nb(OEt)5 and Et4NCl in MeCN was stirred at 50°C for 20-25 min, to the warm mixt. was added with stirring (Me3Si)2S, after it was cooled to room temp., the mixt. was stirred for 4-12 h; mixt. was filtered, ether was added, ppt. was recrystd. from MeCN; elem.anal.;	55%

...Expand

: 3385-94-2
hexamethyldisilathiane

: 56-34-8
tetraethylammonium chloride

: 3236-82-6
niobium(V) ethoxide

: iron(II) chloride

: 811-51-8
sodium thioethylate

: 3N(C2H5)4(1+)*{Nb2Fe6S8(SC2H5)9}(3-) = (N(C2H5)4)3{Nb2Fe6S8(SC2H5)9}

Conditions

Conditions	Yield
With LiOC2H5; N,N,N',N'-tetramethylethylenediamine In acetonitrile byproducts: NaCl; (N2); stirring a CH3CN soln. of LiOEt and (Me3Si)2S; adding a ether soln. of Nb(OEt)5; stirring for 1 h; addn. of tetramethylethylenediamine; diluting (CH3CN); addn. of Et4NCl, FeCl2 and NaSEt; stirring overnight; filtration; concn.; diffusing ether into the filtrate; agitating;removing the powder with the mother liquor maintaining at 5°C for 5 d; collecting the crystals; washing (CH3CN/ether, ether); elem. anal.;	33%

Yield

With LiOC2H5; N,N,N',N'-tetramethylethylenediamine In acetonitrile byproducts: NaCl; (N2); stirring a CH3CN soln. of LiOEt and (Me3Si)2S; adding a ether soln. of Nb(OEt)5; stirring for 1 h; addn. of tetramethylethylenediamine; diluting (CH3CN); addn. of Et4NCl, FeCl2 and NaSEt; stirring overnight; filtration; concn.; diffusing ether into the filtrate; agitating;removing the powder with the mother liquor maintaining at 5°C for 5 d; collecting the crystals; washing (CH3CN/ether, ether); elem. anal.;

33%

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