Alkali Vanadyl Nitrites

By dissolving hypovanadic oxide, VO₂, in aqueous solutions of vanadyl nitrites the following alkali vanadyl nitrites have been prepared:

K₂O.2VO₂.2N₂O₃.4H₂O. Colourless, regular, hexagonal prisms. (NH₄)₂O.2VO₂.2N₂O₃.6H₂O. Pale yellow prisms.

The corresponding sodium salt is very unstable.