Vanadium oxydichloride
Vanadium oxydichloride is the inorganic compound with the formula VOCl2. One of several oxychlorides of vanadium, it is a hygroscopic green solid. It is prepared by comproportionation of vanadium trichloride and vanadium oxides:
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 VOCl2, various blue or green-colored oxotri- and oxotetrachloride salts can be prepared. Examples include N4VOCl3 and the pyridinium derivative 2VOCl4.