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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−
.

References

  1. ^ Nolting, D. D.; Messerle, L. (2014). "Octahedral Hexatungsten Halide Clusters". Inorganic Syntheses: Volume 36. Vol. 36. pp. 19–23. doi:10.1002/9781118744994.ch4. ISBN 9781118744994. {{cite book}}: |journal= ignored (help)
source: https://en.wikipedia.org/wiki/Tungsten(II)_chloride