Ammonium Thiocyanoplatinate, (NH₄)₂Pt(CNS)₆

Ammonium Thiocyanoplatinate, (NH₄)₂Pt(CNS)₆, is obtained on adding ammonium sulphate solution to one of potassium thiocyanoplatinate, and allowing to crystallise out.2 It yields red, hexagonal prisms, which dissolve in water, but yield an unstable solution at the boiling-point. The parameters are:

a: с = 1: 0.9340.