Potassium Selenocyanoplatinate, K2Pt(CNSe)6, is obtained by mixing solutions of potassium chlor-platinate and selenocyanate.8 It crystallises in hemimorphic rhombic crystals which appear red by transmitted light, and black by reflected light. The parameters are 7:
a: b: с = 0.5989: 1: 0.9565.
Density 3.377 at 10.2° C.
The dihydrate, K2Pt(CNSe)6.2H2O, yields trigonal scalenohedral crystals. |