Vanadium oxydichloride
# Vanadium oxydichloride

Vanadium oxydichloride is the inorganic compound with the formula $VOCl_2.$ One of several oxychlorides of vanadium, it is a hygroscopic green solid. It is prepared by comproportionation of vanadium trichloride and vanadium(V) oxides:

    $V_2O_5$ + $VOCl_3$ + 3 $VCl_3$ → 6 $VOCl_2$

As verified by X-ray crystallography, vanadium oxydichloride adopts a layered structure, featuring octahedral vanadium centers linked by doubly bridging oxide and chloride ligands.

From $VOCl_2,$ various blue or green-colored oxotri- and oxotetrachloride salts can be prepared. Examples include $N(CH_3)_4VOCl_3$ and the pyridinium derivative $(C_5H_5NH)_2VOCl_4.$

