Silver phosphides

At 400° C. silver and phosphorus-vapour combine to form the diphosphide, AgP₂, a grey, crystalline mass. White phosphorus dissolves in molten silver, yielding white, crystalline products containing up to 20 per cent, of phosphorus. They are probably solid solutions of silver and phosphorus. Silver phosphide, Ag₂P₅, is precipitated as a brown, amorphous substance by the interaction of silver nitrate and a solution in liquid ammonia of rubidium phosphide, Rb₂P₅.