Palladium Cyanide, Pd(CN)₂

Palladium Cyanide, Pd(CN)₂, was known to Berzelius, who obtained it by decomposition of a palladium salt with mercuric cyanide. It also results when palladium oxide is boiled with a solution of mercuric cyanide. These reactions afford a useful method of separating palladium from its congeners. When heated in air cyanogen is evolved and spongy palladium left.

Palladium cyanide is very stable; insoluble in acids, it dissolves in potassium cyanide.