Formation of Chlorosilyl Pincer-Type Rhodium Complexes
by Multiple Si–H Activations of Bis(phosphine)/Dihydrosilyl
Ligands
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Abstract
The synthesis and metalation of two
bis(phosphine)/dihydrosilyl
ligands at rhodium(I) sources is reported. Irrespective of the substitution
at silicon (diaryl versus diamino), multiple Si–H activations
and chloride migration afford tridentate bis(phosphine)/chlorosilyl
complexes of Rh(I). For the diarylsilyl ligand, reaction with a cationic
rhodium(I) triflate precursor gives the analogous triflatosilyl complex.
The [P<sub>2</sub>Si]H<sub>2</sub> proligands and their Rh complexes
provide distinct opportunities for exploring metal/silicon cooperative
reactivity
