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Names | |
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Other names
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Identifiers | |
3D model (
JSmol)
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ChemSpider | |
PubChem
CID
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CompTox Dashboard (
EPA)
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Properties | |
WBr6 | |
Molar mass | 663.264 g/mol |
Appearance | Dark grey solid |
Density | 5.32 g/cm3 |
Melting point | 232 °C (450 °F; 505 K) (decomposition) |
Hydrolysis | |
Solubility | Soluble in ethanol, ether, carbon disulfide, and ammonia [1] |
Structure [2] | |
Rhombohedral | |
R3 | |
a = 6.39 Å, c = 17.53 Å
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Lattice volume (V)
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620.8 Å3 |
Formula units (Z)
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3 |
Related compounds | |
Other
anions
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Tungsten hexafluoride Tungsten hexachloride |
Related compounds
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Tungsten(V) bromide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Tungsten hexabromide, also known as tungsten(VI) bromide, is a chemical compound of tungsten and bromine with the formula WBr6. It is an air-sensitive dark grey powder that decomposes above 200 °C to tungsten(V) bromide and bromine. [1] [3]
Tungsten hexabromide is mainly produced by the reaction of metallic tungsten and bromine at temperatures around 100 °C in a nitrogen atmosphere: [1] [2]
Another method of producing this compound is by the reaction of tungsten hexacarbonyl and bromine at room temperature, releasing carbon monoxide. [4] It can also be produced by the metathesis reaction of boron tribromide and tungsten hexachloride. [5]
WBr6 is reduced with elemental antimony at elevated temperatrues, consecutively producing, WBr5, WBr4, W4Br10, W5Br12, then finally WBr2 at 350 °C. This reaction produces antimony tribromide as a side product. [4] [6] Any of these bromides can be reverted to the hexabromide by oxidation with bromine at 160 °C. [7]
Tungsten hexabromide is hydrolyzed in water, producing tungsten pentoxide and releasing bromine. [1]
Tungsten(VI) oxytetrabromide is produced by the reaction of tungsten hexabromide and tungsten(VI) oxide: [7]
The trigonal crystal structure of WBr6 consists of isolated WBr6 octahedra and is isostructural with α-WCl6. [2]
![]() | |
Names | |
---|---|
Other names
| |
Identifiers | |
3D model (
JSmol)
|
|
ChemSpider | |
PubChem
CID
|
|
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
WBr6 | |
Molar mass | 663.264 g/mol |
Appearance | Dark grey solid |
Density | 5.32 g/cm3 |
Melting point | 232 °C (450 °F; 505 K) (decomposition) |
Hydrolysis | |
Solubility | Soluble in ethanol, ether, carbon disulfide, and ammonia [1] |
Structure [2] | |
Rhombohedral | |
R3 | |
a = 6.39 Å, c = 17.53 Å
| |
Lattice volume (V)
|
620.8 Å3 |
Formula units (Z)
|
3 |
Related compounds | |
Other
anions
|
Tungsten hexafluoride Tungsten hexachloride |
Related compounds
|
Tungsten(V) bromide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Tungsten hexabromide, also known as tungsten(VI) bromide, is a chemical compound of tungsten and bromine with the formula WBr6. It is an air-sensitive dark grey powder that decomposes above 200 °C to tungsten(V) bromide and bromine. [1] [3]
Tungsten hexabromide is mainly produced by the reaction of metallic tungsten and bromine at temperatures around 100 °C in a nitrogen atmosphere: [1] [2]
Another method of producing this compound is by the reaction of tungsten hexacarbonyl and bromine at room temperature, releasing carbon monoxide. [4] It can also be produced by the metathesis reaction of boron tribromide and tungsten hexachloride. [5]
WBr6 is reduced with elemental antimony at elevated temperatrues, consecutively producing, WBr5, WBr4, W4Br10, W5Br12, then finally WBr2 at 350 °C. This reaction produces antimony tribromide as a side product. [4] [6] Any of these bromides can be reverted to the hexabromide by oxidation with bromine at 160 °C. [7]
Tungsten hexabromide is hydrolyzed in water, producing tungsten pentoxide and releasing bromine. [1]
Tungsten(VI) oxytetrabromide is produced by the reaction of tungsten hexabromide and tungsten(VI) oxide: [7]
The trigonal crystal structure of WBr6 consists of isolated WBr6 octahedra and is isostructural with α-WCl6. [2]