Abstract
Three new organoiridium complexes are prepared from (Ir(COD)(μ-Cl))2 and diphosphine in 1:2 molar ratio, and characterized by means of IR, 1H NMR electric conductivity and elemental analysis. Using acetonitrile as substrate. we investigated the abilities of these complexes to activate sp3 C-H bond and promote insertion reaction of CO, CO2 into metal-carbon bond. The experimental results show that the activity of (Tr(COD)(diphos))Cl is correlated to the electronic property of diphosphine chelate ligand.
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