Potassium aurothiocyanate, KAu(CNS)₂

Potassium aurothiocyanate, KAu(CNS)₂, is formed by warming auric chloride with a solution of potassium thiocyanate at 80° C. It forms yellow prisms, melting above 100° C., and decomposing into gold, potassium thiocyanate, carbon disulphide, and sulphur. It contains the complex aurothiocyanic radical, Au(CNS)₂', and with silver nitrate yields the corresponding silver aurothiocyanate, AgAu(CNS)₂.