Pb0.27K1.73 [Pt(CN)4] Cl0.5[mddot]3H2O - A New Partially Oxidised Tetracyanoplatinate Containing Both Divalent and Monovalent Cations

Abstract Electrolysis of an aqueous solution of potassium tetracyanoplatinate(II) and lead(II) acetate containing a small quantity of chloride ions yields copper coloured crystals of Pb0.27K1.73 [Pt(CN)4] Cl0.5[mddot]3H2O in low yield. The Pb : K mole-ratio appears to be fixed irrespective of the mole-ratio of the Pb : K in the electrolyte. X-ray studies indicate that the compound has similar unit cell dimensions to K2[Pt(CN)4]Cl0.3[mddot]3H2O. Electrical conduction studies show that the compound is a l-D metal at room temperature with a specific conductivity in the platinum atom chain direction of ~ 70 Ω−1 cm−1.