Nickel Thiocarbonate Hexammoniate, NiCS₃.3NH₃

Nickel Thiocarbonate Hexammoniate, NiCS₃.3NH₃, is prepared by gently warming nickel hydroxide with aqueous ammonia and carbon disulphide. It crystallises in ruby-red, transparent needles, which are but slightly soluble in water. On warming, carbon disulphide is evolved. Upon exposure to air both ammonia and carbon disulphide escape.