tungsten(4+) tetrabromide

Base Information

• Chemical Name: tungsten(4+) tetrabromide
• CAS No.: 14055-81-3
• Molecular Formula: Br4W
• Molecular Weight: 503.456
• Mol file: 14055-81-3.mol

Synonyms:

Chemical Property of tungsten(4+) tetrabromide

Chemical Property:

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Density: g/cm³

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of tungsten(4+) tetrabromide

There total 2 articles about tungsten(4+) tetrabromide 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: 64.0%

tungsten hexacarbonyl (14040-11-0) + bromine (7726-95-6) → tungsten(IV) bromide (14055-81-3)

Guidance literature:

In dichloromethane; at -18 - 20 ℃; for 3h; Inert atmosphere;

DOI:10.1007/s11243-015-9954-x

Reference yield:

tungsten(VI) bromide (13701-86-5,20581-17-3) → tungsten(IV) bromide (14055-81-3)

Guidance literature:

With phosphorus; at 175 ℃; for 0.5h; Inert atmosphere; Glovebox; Sealed tube;

DOI:10.1021/ic502333u

Reference yield: 64.0%

tungsten(IV) bromide (14055-81-3) + 1-amido-1,1,3,3-tetraphenyl-4,4-dihydroketadiphosphonitrilium chloride (2960-45-4) → NP(C6H5)2NP(C6H5)2NWBr3 (110589-09-8)

Guidance literature:

In further solvent(s); byproducts: HBr, HCl; addn. of phosphazene salt to WBr4 suspension (liq. bromine); refluxing, 24h; distn.; drying residue in vac.; recrystn. (twice from dry acetonitrile); elem. anal.;

upstream raw materials:

tungsten(VI) bromide

tungsten hexacarbonyl

bromine

Downstream raw materials:

NP(C₆H₅)2NP(C₆H₅)2NWBr₃

tetrabromo-1,2-bis(diphenylphosphino)ethane-tungsten(IV)

Refernces

• 1、 Bhuiyan, Mohammad A. I.,Hargrove, Willie R.,Metz, Clyde R.,White, Peter S.,Sendlinger, Shawn C.. "Improved synthetic routes to tungsten(IV) bromide complexes". . p. 613 - 621. Retrieved 2015/08/06.