Abstract

Abstract A dihydroxy platinum(II) compound, cis-[Pt(PMe3)2(OH)2]·nH2O (Me = methyl, n = 2–3; 1) has been isolated. The presence of several water molecules is required for the stabilization of the complex. The solution equilibria of 1 with some equivalents of nitric acid has been observed by 31P NMR spectroscopy, as well as the reaction of 1 with aqueous hydrogen peroxide. Leaving 1 in air gives carbonatoplatinum(II), cis-[Pt(PMe3)2(CO3)]·2H2O. The crystal structure determination has revealed that the carbonate anion forms a 4-membered chelate with a platinum atom.

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