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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:
14040-11-0
Molecular Weight:
351.90
EC Number:
237-880-2
MDL number:
MFCD00011462
UNSPSC Code:
12352103
PubChem Substance ID:
24870851
NACRES:
NA.23

vapor density

12.1 (vs air)

Quality Level

200

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

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.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301 + H311 + H331

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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Certificates of Analysis (COA)

Lot/Batch Number
0000406985
0000406992
0000406989
0000378140
0000378141

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Journal of Organometallic Chemistry, 692, 562-562 (2007)
Denny, N.R.
Proc. SPIE: Int. Soc. Opt. Eng., 6005-6005 (2005)
Kuramshin, A.I. et al.
Russ. J. Org. Chem., 41(5), 649-655 (2005)
Utke, I.; et al.
Advanced Engineering Materials, 8 (3), 155-157 (2006)
Seth M Dumbris et al.
The Journal of organic chemistry, 74(22), 8862-8865 (2009-10-30)
Hydantoins can be synthesized from the corresponding amino amides employing oxidative catalytic carbonylation using W(CO)(6) as the catalyst, I(2) as the oxidant, CO as the carbonyl source, and DBU as base. Secondary amides afford the hydantoins in good to excellent
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