Crystalline structure and vibrational spectra of cis-dichlorodiammine-trans-dihydroxo- platinum(IV), PtCl2(NH3)2(OH)2

Abstract

The structure of cis-dichlorodiammine-trans-dihydroxoplatinum(IV), PtCl₂(OH)₂(NH₃)₂, has been determined by X-ray diffraction. The tetragonal space group, P4₂/n has cell dimensions a = 7.328(4), c = 11.362(5) Å and has four formula units in the cell. Intensities were measured using MoKα radiation and a Syntex P2₁ diffractometer. The crystal structure was determined by standard methods and refined to R₁ = 0.0460, R₂ = 0.0639 based on 447 independent reflections. The platinum atom has roughly octahedral coordination and Pt—Cl, Pt—N, Pt—O distances (2.306(4), 2.00(1), 2.00(1) Å) are normal. The crystal is held together by hydrogen bonds, and the vibrational spectra have been correlated with observed features of the hydrogen bonding.