Vanadium Oxydichloride, VO₂Cl₂.8H₂O

By the action of dilute aqueous hydrochloric acid on the two isomeric hydrates of hypovanadic acid, two isomeric forms of Vanadium Oxydichloride, VO₂Cl₂.8H₂O, have been prepared. The green hydrate gives rise to deep green crystals, and the rose hydrate to blue crystals of the same empirical composition. Their constitutions are a matter of doubt.

In addition to the above, two other vanadium oxychlorides have been reported: V₂O₂Cl₄.5H₂O or 2VO₂.4HCl.3H₂O, and V₂O₃Cl₂.4H₂O or 2VO₂.2HCl.3H₂O.