Abstract
The complexes [PtR(dppm-P,P)(dppm-P)]PF6 (R = Me, Et, Ph) react with [AuCl(SMe2)] to generate the dppm-bridged platinum−gold complexes trans-[PtClR(μ-dppm)2Au]PF6 (1). Addition of [PtR(dppm-P,P)(dppm-P)]Cl to a solution of silver(I) acetate, followed by acetyl chloride, yields the neutral platinum-silver species trans-[PtClR(μ-dppm)2AgCl] (2). Similarly, addition of [PtR(dppm-P,P)(dppm-P)]Cl to a solution of mercury(II) acetate, followed by acetyl chloride, yields the neutral platinum-mercury species trans-[PtClR(μ-dppm)2HgCl2] (3). Each of the complexes has been characterized by 1H and 31P{1H} NMR spectroscopy and by elemental analysis. The crystal structure of 1 as its methyl derivative 1a (CHCl3 solvate) has been determined by X-ray diffraction. The compound exhibits approximate square-planar geometry at platinum and linear geometry at gold. The platinum−gold internuclear distance is 3.008(1) A. The methyl complex 2a crystallizes as its CHCl3 solvate. The geometry at platinum is distorted square planar...
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