13470-11-6

Basic information

• Product Name: TUNGSTEN (V) BROMIDE
• Synonyms: TUNGSTEN (V) BROMIDE;Tungsten bromide;WBr5;Tungsten (V) bromide, 99+%;Wolfram(V) bromide;Wolfram(V)pentabromide;Tungsten broMide (WBr5)
• CAS NO: 13470-11-6
• Molecular Formula: Br₅W
• Molecular Weight: 583.36
• Mol File: 13470-11-6.mol

Chemical Properties

• Melting Point: 286°C
• Boiling Point: 333°C
• Appearance: /brown-black hygroscopic solid
• CAS DataBase Reference: TUNGSTEN (V) BROMIDE(CAS DataBase Reference)
• NIST Chemistry Reference: TUNGSTEN (V) BROMIDE(13470-11-6)
• EPA Substance Registry System: TUNGSTEN (V) BROMIDE(13470-11-6)

Safety Data

• Hazard Codes: C
• Statements: 34
• Safety Statements: 22-26-27-36/37/39-45
• RIDADR: 1759
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 13470-11-6(Hazardous Substances Data)

Usage

Chemical Properties

brownish violet crystal(s); high moisture sensitivity; prepared by reaction of bromine vapor on metallic tungsten at 450°C–500°C [KIR83]

InChI:InChI=1/5BrH.W/h5*1H;/q;;;;;+5/p-5/rBr5W/c1-6(2,3,4)5

Upstream product

• 10035-10-6 hydrogen bromide 
• 13283-01-7 tungsten(VI) chloride 
• 7726-95-6 bromine 
• 7440-33-7 tungsten 
• 80937-33-3 oxygen 
• 13701-86-5 tungsten(VI) bromide 

Downstream Products

• 7440-33-7 tungsten 
• 13283-01-7 tungsten(VI) chloride 
• 147833-83-8 WBr₄((C₆H₅)3P)2 
• 147930-55-0 W₂Br₄((C₆H₅)P(CH₃)2)4 
• 147833-81-6 W₂Br₄((C₆H₅)2P(CH₃))4 
• 136951-96-7 {PH(CH₃)2(C₆H₅)}⁽¹⁺⁾*{WOBr₄(OP(CH₃)2(C₆H₅))}^(1-)={PH(CH₃)2(C₆H₅)}{WOBr₄(OP(CH₃)2(C₆H₅))} 
• 147930-53-8 W₂Br₄(((C₆H₅)2P)2CH₂)2 
• 139376-29-7 W₂Br₆(P(CH₃)2C₆H₅)3 

Relevant articles and documents

Cluster harvesting in the WBr6-P System

A combined thermal scanning-X-ray diffraction (XRD) approach was performed for the WBr6-P system to detect and analyze phases in this system, including metal-rich phases generated with increasing amounts of elemental (red) phosphorus under partial PBr3 release. Phases were characterized by powder XRD. A black crystalline powder of W4(PBr)Br10 was obtained after reduction of WBr6 with elemental phosphorus at 450 °C. The crystal structure of the new compound was found to be isotypic with the structure of W4(PCl)Cl10 on the basis of powder XRD data. The structure of W4(PBr)Br10 is represented by a cyclobutadiene-like tetranuclear tungsten cluster interconnected into a layered (W4(μ4-PBr)Br6i)Br8/2a-a arrangement via outer bromide ligands. The μ4-capping bromophosphinidene ligand was verified by solid-state magic-angle spinning 31P NMR spectroscopy.

Spectroscopic Studies on Matrix Isolated Tungsten Chlorides and Bromides

Tungsten pentachloride has been heated in high vacuum, and the vapour species isolated in inert matrices at ca. 12 K.Subsequent i.r. spectra showed intense features at 410 and 365 cm-1 which are assigned as the A2'' and E' stretching modes respectively of monomeric D3hWCl5.Corresponding studies on the hexachloride showed that monomeric WCl6 could similarly be isolated, and for this species, the u.v.-visible spectrum was also obtained and analysed in detail.The vaporisation of tungsten bromide samples of typical stoicheiometry WBr5.3 yielded a new spectroscopic feature in the matrix i.r. spectrum at ca. 305 cm-1 which is assigned to molecular WBr6.At higher temperatures, the vaporisation of the solid pentabromide resulted in bands at 280 and 245 cm-1 which are assigned as the A2'' and E' stretching modes in D3hWBr5.