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CAS No.: | 3236-82-6 | ||||||||||||||||||
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Name: | NIOBIUM ETHOXIDE | ||||||||||||||||||
Article Data: | 21 | ||||||||||||||||||
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.) |
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Boiling Point: |
140-142 °C0.1 mm Hg(lit.) |
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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: |
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PSA: | 46.15000 | ||||||||||||||||||
LogP: | 2.43600 |
niobium pentachloride
D
niobium(V) ethoxide
Conditions | Yield |
---|---|
With ethanol In ethanol N2-atmosphere; 0.5 M NbCl5; varying product ratio depending on temperature; |
Conditions | Yield |
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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); |
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.;; |
Conditions | Yield |
---|---|
In neat (no solvent) heating;; |
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% |
4-methyl-2-mercaptophenol
niobium(V) ethoxide
triethylamine
HN(C2H5)3(1+)*Nb(C7H6OS)3(1-) = (HN(C2H5)3)[Nb(C7H6OS)3]
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% |
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% |
hexamethyldisilathiane
tetraethylammonium chloride
niobium(V) ethoxide
4(C2H5)4N(1+)*Nb6S17(4-)*3CH3CN=((C2H5)4N)4[Nb6S17]*3CH3CN
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% |
hexamethyldisilathiane
tetraethylammonium chloride
niobium(V) ethoxide
sodium thioethylate
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% |
zinc diacetate
niobium(V) ethoxide
bismuth(III) acetate