Oxidation of organometallic complexes by water: Synthesis of diorgano(hydroxo) platinum(IV) complexes and the structure of a diorgano(aqua) platinum(iv) complex of tris(pyridin-2-yl) methanol, [PtPH2{(py)3COH-N,N′,N″}(OH2)][NO3]2·H2O

Article abstract of DOI:10.1016/0022-328X(95)05874-O

The diorganoplatinum(II) complexes PtR₂{(py)₃COH} (R = Me, Ph; (py)₃COH = tris(pyridin-2-yl)methanol) react with water in organic solvents to form diorgano(hydroxo)platinum(IV) cations [Pt(OH)R₂{(py)₃COH}]⁺, and the cation with R = Ph reacts with dilute nitric acid to form [PtPh₂{(py)₃COH}(OH₂)]²⁺. The cation in [PtPh₂{(py)₃COH}(OH₂)] [NO₃]₂·H₂O has octahedral geometry with a Pt-O bond distance of 2.04(1) A. The higher trans influence of phenyl than aqua ligands is reflected in the Pt-N bond distances: 2.14(2) and 2.17(1) A trans to the phenyl groups, and 1.99(2) A trans to the aqua ligand.