Solid-State Structure of Tp‘PtMe₂H, a Dimethylhydrido Platinum(IV) Complex

Abstract

The solid-state X-ray structure of Tp‘PtMe2H has been determined. This platinum(IV) hydride derivative is stable at room temperature and crystallizes in an orthorhombic cell (space group Pcmn, Z = 4, a = 8.1292(8) Å, b = 13.3862(9) Å, and c = 17.9670(16) Å). The hydride ligand was not located. The complex was synthesized as one of a series of organometallic platinum(IV) derivatives with Tp‘ (Tp‘ = hydridotris(3,5-dimethylpyrazolyl)borate) in the coordination sphere. These octahedral platinum(IV) Tp‘PtMe2X and Tp‘PtPh2X complexes were prepared by formal oxidation of platinum(II) intermediates ([K][Tp‘PtMe2] and [K][Tp‘PtPh2]) with electrophiles (HX, MeI, I2). Thermogravimetric analysis (TGA) was employed to determine the solid-state decomposition temperatures for these platinum(IV) organometallic complexes.