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Merck
CN

472956

Sigma-Aldrich

Tungsten hexacarbonyl

99.99% trace metals basis (excluding Mo), purified by sublimation

Synonym(s):

Hexacarbonyltungsten, Tungsten carbonyl, Tungsten hexacarbonyl

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About This Item

Linear Formula:
W(CO)6
CAS Number:
Molecular Weight:
351.90
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23
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vapor density

12.1 (vs air)

Quality Level

vapor pressure

1.2 mmHg ( 67 °C)

Assay

99.99% trace metals basis (excluding Mo)

form

solid

purified by

sublimation

reaction suitability

core: tungsten
reagent type: catalyst

mp

150 °C (lit.)

density

2.65 g/mL at 25 °C (lit.)

SMILES string

[W].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+]

InChI

1S/6CO.W/c6*1-2;

InChI key

FQNHWXHRAUXLFU-UHFFFAOYSA-N

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General description

Atomic number of base material: 74 Tungsten
Tungsten hexacarbonyl is an organometallic compound that looks like a white crystalline solid. It is volatile and stable in inert environments. While it doesn′t dissolve well in water, it dissolves easily in non-polar organic solvents. This compound is mainly used in organometallic chemistry and materials science, especially for depositing tungsten films using chemical vapor deposition(CVD).

Application

A precursor for the perparation of tungsten-containing complexes or nanomaterials. Also used in photochemistry
Catalyst used in the photochemical cyclization of silyloxytrienes via either a 6-endo pathway or a Cope rearrangement.
Tungsten hexacarbonyl is used as a
  • Reducing agent in the synthesis of uniform single and binary metal nanoparticles, for applications in catalysis, electronics, and materials science.
  • Shape-directing agent in the low-temperature synthesis of non-spherical nickel nanocrystals, enabling the controlled formation of fivefold twinned nanorods and nanocubes with room-temperature ferromagnetic properties.
  • Precursor in metal-organic chemical vapor deposition to synthesize Rhenium-Tungsten(Re–W) nanoparticles on carbon nanotubes
  • Precursor in the aerosol-assisted chemical vapor deposition of WO₃ thin films, enabling the fabrication of hybrid heterojunction gas sensors with high sensitivity and stability for ammonia detection at room temperature.
  • As an organometallic precursor to create metal-containing nanostructures in electron beam induced deposition (EBID).
  • As a precursor for catalysts in alkene metathesis and ligand substitution reactions. It is commonly used in organometallic synthesis, as one or more CO ligands can be replaced by other donor ligands.

Features and Benefits

  • 99.99% purity on a trace metals, ensuring optimal performance.
  • Low impurities(≤ 150.0 ppm) in precursors minimize defects in the crystal structure of the synthesized material, enhancing performance and stability and forms uniform WO3 films.
  • Low metal content (such as Na, Zr, Cd, Cu, etc.) leads to reduced site reactions and increased yield in catalytic processes.

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Journal of Organometallic Chemistry, 692, 562-562 (2007)
Denny, N.R.
Proc. SPIE: Int. Soc. Opt. Eng., 6005-6005 (2005)
Utke, I.; et al.
Advanced Engineering Materials, 8 (3), 155-157 (2006)
Kuramshin, A.I. et al.
Russ. J. Org. Chem., 41(5), 649-655 (2005)
Keisha-Gay Hylton et al.
The Journal of organic chemistry, 68(4), 1615-1617 (2003-02-15)
W(CO)(6)-catalyzed carbonylation provides an alternative to phosgene or phosgene derivatives such as 1,1-carbonyldiimidazole (CDI) for the conversion of amines to ureas. As an illustration, the core structure of the HIV protease inhibitors DMP 323 and DMP 450 has been prepared

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