Potassium Thiocyanoplatinite, K2Pt(CNS)4, is obtained by crystallisation from mixed solutions of potassium chlorplatinite and thiocyanate. It yields red, hexagonal prisms which are readily soluble in warm water or alcohol, giving an orange-yellow solution.
The Ammonium salt, (NH4)2Pt(CNS)4, has also been prepared by digesting ammonium chlor-platinite with a solution of an alkali thiocyanate until all has dissolved, and allowing to crystallise. It resembles the potassium salt.
The Silver salt, Ag2Pt(CNS)4, is known. |