Wolframhexacarbonyl

Base Information

• Chemical Name: Wolframhexacarbonyl
• CAS No.: 14040-11-0
• Molecular Formula: C6O6W
• Molecular Weight: 351.912
• Hs Code.: 29310095
• Mol file: 14040-11-0.mol

Synonyms:Wolframhexacarbonyl;CS-0044576;FT-0696816;D94507;J-007385;Wolframhexacarbonyl,carbon monooxide- tungsten(6:1), Hexacarbonyl tungsten,;hexakis(carbon monoxide) tungsten, Tungsten carbonyl (W(CO)6), Tungsten hexacarbonyl

Chemical Property of Wolframhexacarbonyl

Chemical Property:

• Appearance/Colour: white crystalline powder
• Vapor Pressure: 1.2 mm Hg ( 67 °C)
• Melting Point: 150 °C(lit.)
• Boiling Point: 175 °C
• Flash Point: 200°C
• PSA: 0.00000
• Density: 2.65 g/mL at 25 °C(lit.)
• LogP: -1.24800
• Storage Temp.: Store below +30°C.
• Water Solubility.: insoluble
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 0
• Exact Mass: 351.920421
• Heavy Atom Count: 13
• Complexity: 10

Purity/Quality:

99% ^*data from raw suppliers

Tungsten carbonyl, 99% (<0.3%-Mo) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T
• Hazard Codes: T
• Statements: 23/24/25
• Safety Statements: 22-24/25-45-38-36/37/39-28A-36/37

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: [C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[W]
• description: Tungsten 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).
• uses: Tungsten 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.
• Physical properties: White 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.
• Uses: Tungsten Hexacarbonyl is an useful catalyst in carbonyation amines, as well as an stable source of tungsten atoms through electron beam-induced depostion. Tungsten coatings on base metals by deposition and decomposition of the carbonyl.

Technology Process of Wolframhexacarbonyl

There total 330 articles about Wolframhexacarbonyl which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 96.0%

(CO)5WC(OEt)SiPh3 → tungsten hexacarbonyl (14040-11-0) + triphenylhydroxysilane (791-31-1)

Guidance literature:

With carbon monoxide; In diethyl ether; High Pressure; under dried N2; addn. of N-methylbenzimine at 25°C to a soln. of W-complex (CO-pressure: 50 atm); stirring for 2 d at room temp., then for 1-2 h at 80-100°C; vac.-evapn. until dryness; residue dissolved in petroleum ether/ether; chromy. (silica gel/petroleum ether/ether); recrystn. from petroleum ether; elem. anal.;

DOI:10.1016/0022-328X(89)85046-6

Reference yield: 90.0%

(CO)5WC(OEt)SiPh3 + benzylidene phenylamine (538-51-2) → tungsten hexacarbonyl (14040-11-0) + CH(C6H5)CSi(C6H5)3(C2H5O)CON(C6H5) + CH(C6H5)CSi(C6H5)3(C2H5O)CON(C6H5) + triphenylhydroxysilane (791-31-1)

Guidance literature:

With carbon monoxide; In diethyl ether; High Pressure; under dried N2; addn. of N-methylbenzimine at 25°C to a soln. of W-complex (CO-pressure: 50 atm); stirring for 2 d at room temp., then for 1-2 h at 80-100°C; vac.-evapn. until dryness; residue dissolved in petroleum ether/ether; chromy. (silica gel/petroleum ether/ether); recrystn. from petroleum ether; elem. anal.;

DOI:10.1016/0022-328X(89)85046-6

Reference yield: 83.0%

2Na(1+)*W(CO)5(2-) = Na2[W(CO)5] (54099-82-0) + carbon dioxide (124-38-9,18923-20-1) → tungsten hexacarbonyl (14040-11-0) + sodium carbonate (497-19-8)

Guidance literature:

In tetrahydrofuran; reductive disproportionation; mechanism discussed;; IR;;

DOI:10.1021/ja00244a017

upstream raw materials:

tungsten pentacarbonyl tetrahydrofuran

Iodoacetic acid

(W(CO)5((CH₃)3SiCH₂SCH₂Si(CH₃)3))

(W(CO)5((CH₃)3SiCH₂SeCH₂Si(CH₃)3))

Downstream raw materials:

tetracarbonyl-bis(diphenylphosphino)methane-tungsten(0)

carbon monoxide

hydrogen

tungsten (2,6-dimethylphenyl isocyanide)6

Refernces

Facile chelate assisted carbon-halogen bond cleavage at tungsten(0)

10.1021/om00152a031

The research aimed to explore the coordination chemistry of potentially tetradentate ligands with transition metals, focusing on the facile chelate-assisted carbon-halogen bond cleavage at tungsten(0). The study demonstrated that aryl carbon-halogen bonds of certain ligands, prepared by Schiff base condensation of ethylenediamine and 2-halobenzaldehyde (la-c, X = Cl, Br, I), could be readily cleaved by reaction with tungsten(0), resulting in the formation of seven-coordinate tungsten(II) complexes, W(CO)5(la-c). In contrast, the related ligand 1,4-bis(2-chlorobenzyl)2,3dimethyl-1,4diaza-2,3-butadiene (2) coordinated to tungsten(0) but did not oxidatively add under similar conditions. The research concluded that subtle changes in the ligand framework can significantly affect the propensity for oxidative addition in these systems. Key chemicals used in the process included tungsten carbonyls (W(CO)6 and W(CO)3(RCN)2), ethylenediamine, 2-halobenzaldehyde, and the ligand 2.

Synthesis of the branched C-glycoside substructure of altromycin B

10.1021/ol050975u

The research aims to synthesize the branched C-glycoside substructure of altromycin B, an antibiotic and anticancer compound, using non-carbohydrate precursors. The study employs a tungsten-catalyzed cycloisomerization of alkynyl alcohols to produce key intermediates, followed by a sequence of Stille cross-coupling reactions and selective functional group transformations. Key chemicals used include alkynyl alcohols such as 8, tungsten hexacarbonyl (W(CO)?), and various reagents for functional group transformations like DIBAL (diisobutylaluminum hydride), TBSCl (tert-butyldimethylsilyl chloride), and AD-mix (Sharpless asymmetric dihydroxylation reagent). The research concludes with the successful synthesis of the C13-diastereomers of the branched C-arylglycoside (2a and 2b), which were confirmed by X-ray crystallography and NMR spectroscopy. The findings support ongoing efforts towards the total synthesis of altromycin natural products and provide a robust synthetic route for this complex substructure.

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