Hexaphosphonitrilic Chloride, P₆N₆Cl₁₂

Hexaphosphonitrilic Chloride, P₆N₆Cl₁₂, forms long prismatic crystals. The formula was established by the methods used in the case of P₅N₅Cl₁₀. Hydrolysis takes place rather more readily, since hydrochloric acid is evolved when the chloride is kept in moist air. Hydrolysis in ether solution gave hexametaphosphimic acid.