Rubidium Platinocyanide, Rb₂Pt(CN)₄

Rubidium Platinocyanide, Rb₂Pt(CN)₄.3H₂O (?) yields monoclinic crystals, the crystallographic elements being:

a:b:c = 0.9313: 1: 0.5325; β = 99° 48.25'.

Silver Platinocyanide, Ag₂Pt(CN)₄, has also been prepared. It is white and does not blacken upon exposure to sunlight.