Abstract
A (tBu-DAC)Ir(COD)Cl complex (tBu-DAC=1,3-bis(N-tert-butyl)diamidocarbene, COD=1,5-cyclooctadiene) reacts with titanocene(II) and zirconocene(II) sources to form heterobimetallic complexes by metallocene coordination at the remote oxalamide binding site. Structural and spectroscopic data reveal the formation of a doubly-reduced [tBu-DAC]2− ligand upon metallocene complexation. The metallocene-substituted complexes catalyze benzaldehyde hydrosilation at rates over an order of magnitude faster than those observed with the parent iridium complex.
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