Tungsten(II) chloride

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. 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
 * [[Image:Mo6Cl14-anion-from-xtal-2008-CM-3D-ellipsoids.png|180px|thumb|left|Structure of the cluster anion [W6Cl14]2−]].