Tungsten(II) chloride

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Tungsten(II) chloride
3D model (JSmol)
Molar mass 1528.44 g·mol−1
Appearance yellow brown solid
Density 5.44 g·cm−3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tungsten(II) chloride is the inorganic compound with the formula W6Cl12. It is a polymeric cluster compound. The material dissolves in concentrated hydrochloric acid, forming (H3O)2[W6Cl14](H2O)x. Heating this salt gives yellow-brown W6Cl12.[1] The structural chemistry resembles that observed for molybdenum(II) chloride.

Tungsten(II) chloride is prepared by reduction of the hexachloride. Bismuth is a typical reductant:

6 WCl6 + 8 Bi → W6Cl12 + 8 BiCl3
Structure of the cluster anion [W6Cl14]2−


  1. ^ Nolting, D. D.; Messerle, L. (2014). "Octahedral hexatungsten halide clusters". Inorg. Synth. 36: 19–23. doi:10.1002/9781118744994.ch4.CS1 maint: uses authors parameter (link)