Abstract
AbstractCationic PtII–IrIII heterobimetallic complexes bridged by cyclooctane‐1,2‐dithiolato ligands [(PPh3)2Pt(μ2‐SRS)IrCl(η5‐Cp*)][SbF6] [R = cis‐C8H14 (5), trans‐C8H14 (6), Cp* = C5Me5] were synthesized by reaction of (cyclooctane‐1,2‐dithiolato)PtII complexes [Pt(SRS)(PPh3)2] [R = cis‐C8H14 (3), trans‐C8H14 (4)] with [IrCl(μ‐Cl)(η5‐Cp*)]2 in thf in the presence of AgSbF6. The structures of complexes 5 and 6 were fully characterized by their NMR spectroscopic data. Moreover, X‐ray crystallographic analysis of 5 revealed that the PtS2Ir core exhibits a hinged arrangement, in which the cis‐cyclooctane‐1,2‐dithiolate acts as a bridging ligand between the platinum and iridium metals. Complexes 5 and 6 served as a catalyst in the hydrosilylation of terminal alkynes R′CCH (R′ = Ph, Bu, CO2Me) with tertiary hydrosilanes such as Et3SiH and Ph3SiH to afford selectively β‐(Z)‐vinylsilanes 8 in high yields.
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