Tungsten hexachloride

Tungsten hexachloride is an inorganic chemical compound of tungsten and chlorine with the chemical formula WCl6. This dark violet blue compound exists as volatile crystals under standard conditions. It is an important starting reagent in the preparation of tungsten compounds. Other examples of charge-neutral hexachlorides are rhenium(VI) chloride and molybdenum(VI) chloride. The highly volatile tungsten hexafluoride is also known.

Tungsten hexachloride

α-Tungsten hexachloride

β-Tungsten hexachloride
Names
IUPAC names
Tungsten hexachloride
Tungsten(VI) chloride
Identifiers
3D model (JSmol)
ECHA InfoCard 100.032.980
EC Number
  • 236-293-9
RTECS number
  • YO7710000
UNII
  • InChI=1S/6ClH.W/h6*1H;/q;;;;;;+6/p-6
  • Cl[W](Cl)(Cl)(Cl)(Cl)Cl
Properties
WCl6
Molar mass 396.54 g·mol−1
Appearance dark blue crystals, moisture sensitive
Density 3.52 g/cm3
Melting point 275 °C (527 °F; 548 K)
Boiling point 346.7 °C (656.1 °F; 619.8 K)
Hydrolyzes
Solubility in chlorocarbons soluble
−71.0·10−6 cm3/mol
Structure
α:rhombohedral, β: hexagonal
Octahedral
0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
oxidizer; hydrolysis releases HCl
Related compounds
Other anions
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

As a d0 atom, tungsten hexachloride is diamagnetic.

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