Tungsten hexacarbonyl

Tungsten hexacarbonyl Basic information
description uses Reaction Preparation
Product Name:Tungsten hexacarbonyl
Synonyms:(OC-6-11)-Tungstencarbonyl;(oc-6-11)-tungstencarbonyl(w(co)6;Hexacarbonylwolfram;Tungsten carbonyl (W(CO)6);Tungsten carbonyl (W(CO)6), (OC-6-11)-;Tungstencarbonyl(W(CO)6);Tungstencarbonyl(W(CO)6),(OC-6-11)-;tungstenehexacarbonyl
CAS:14040-11-0
MF:6CO.W
MW:351.9
EINECS:237-880-2
Product Categories:ALD Precursors;metal carbonyl complex;metal carbonyl complexes;Catalysis and Inorganic Chemistry;Chemical Synthesis;Precursors by Metal;Tungsten;TungstenVapor Deposition Precursors
Mol File:14040-11-0.mol
Tungsten hexacarbonyl Structure
Tungsten hexacarbonyl Chemical Properties
Melting point 150 °C (lit.)
Boiling point 175 °C
density 2.65 g/mL at 25 °C (lit.)
vapor density 12.1 (vs air)
vapor pressure 1.2 mm Hg ( 67 °C)
RTECS YO7705000
Fp 200°C
storage temp. Store below +30°C.
form Fine Crystalline Powder
Specific Gravity2.671
color Light yellow to beige
Water Solubility insoluble
Hydrolytic Sensitivity4: no reaction with water under neutral conditions
Exposure limitsACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
Stability:Stable. Incompatible with oxidizing agents.
CAS DataBase Reference14040-11-0(CAS DataBase Reference)
NIST Chemistry ReferenceTungsten hexacarbonyl(14040-11-0)
EPA Substance Registry SystemTungsten carbonyl (W(CO)6), (OC-6-11)- (14040-11-0)
Safety Information
Hazard Codes T
Risk Statements 23/24/25
Safety Statements 22-24/25-45-38-36/37/39-28A-36/37
RIDADR UN 3466 6.1/PG 3
WGK Germany 3
Hazard Note Toxic
TSCA Yes
HazardClass 6.1
PackingGroup II
HS Code 29310095
MSDS Information
ProviderLanguage
Tungsten hexacarbonyl English
SigmaAldrich English
ACROS English
ALFA English
Tungsten hexacarbonyl Usage And Synthesis
descriptionTungsten hexacarbonyl is easily vaporized and decomposed by the electron beam — providing a convenient source of tungsten atoms. This product is widely used in electron beam-induced deposition processes, it is also used as a precursor to catalysts for alkene metathesis and to desulfurize organosulfur compounds. It is relatively air-stable, and it is sparingly soluble in non-polar organic solvents. W(CO)6 reactions begin with the displacement of some of its CO ligands. Similar to Mo(CO)6 in behavior, W(CO)6 typically forms compounds that are kinetically more robust. Synthesis of this product are reported (see the links below).
usesTungsten hexacarbonyl, [W(CO)6] may be used as a precursor for the deposition of WO3-x films, which may be used as gas sensors for the detection of NO2.
Precursor to a Fischer carbene complex which reduces Pd(II) to nanoparticulate Pd(0) that is catalytically active in Hiyama cross-coupling.
ReactionVolatile starting material used for the atomic layer deposition of tungsten oxide, tungsten nitride.
Tungsten hexacarbonyl is used to produce tungsten coatings on base metals. This is done by deposition of the carbonyl on the metal surface, which decomposes to leave a tungsten coating.
PreparationTungsten hexacarbonyl is produced by heating tungsten metal with carbon monoxide at high pressure. Also, carbonyl can be prepared by reducing the tungsten hexachloride by heating with iron powder under carbon monoxide pressure.
Chemical PropertiesWhite, volatile, highly refractive, crystalline solid. Decomposes without melting at 150C. One of the more stable carbonyls. Insoluble in water; soluble in organic solvents.
Physical propertiesWhite crystalline solid; density 2.65 g/cm3; decomposes at 170°C without melting; sublimes; vapor pressure 0.1 torr at 20°C; insoluble in water; soluble in most organic solvents.
UsesIt is used as a catalyst in many organicsynthetic reactions.
UsesTungsten coatings on base metals by deposition and decomposition of the carbonyl.
UsesTungsten Hexacarbonyl is an useful catalyst in carbonyation amines, as well as an stable source of tungsten atoms through electron beam-induced depostion.
General DescriptionAtomic number of base material: 74 Tungsten
Health HazardToxicity of this compound is not reported.Although air stable at ambient temperature,upon heating it emits toxic carbonmonoxide. Chronic exposure to its vaporsor dusts can cause bronchitis. Ingestion islikely to produce the toxic effect of tungstenoxides.
Fire HazardIt explodes when heated to high temperature. Solution in ether can explode if stored for a long time.
Purification MethodsSublime it in vacuo before use [Connoe et al. J Chem Soc, Dalton Trans 511 1986]. TOXIC.
Tungsten hexacarbonyl Preparation Products And Raw materials
Preparation ProductsCyclohexene oxide-->3-Fluoroacetanilide-->Tungsten-->Tungsten,pentacarbonyl(triphenylarsine)-(OC-6-22)-
TRICARBONYLMESITYLENETUNGSTEN TUNGSTEN SILICIDE TUNGSTEN(V) ETHOXIDE Hydrazine sulfate Molybdenum hexacarbonyl TPP RUTHENIUM CARBONYL 1,1'-Carbonyldiimidazole CYCLOPENTADIENYLTUNGSTEN TRICARBONYL DIMER Ammonium paratungstate Carbonyl iron powder CARBONYL SULFIDE Tungsten carbide NICKEL CARBONYL Tungsten hexacarbonyl Tungsten Iron carbonyl Chromium hexacarbonyl Tungsten Carbonyl

Email:[email protected] [email protected]
Copyright © 2024 Mywellwork.com All rights reserved.