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Three new organoiridium complexes are prepared from (Ir(COD)(μ-Cl))_2 and di-phosphine in 1:2 molar ratio, and characterized by means of IR, ~1H NMR elecric conductivityand elemental analysis. Using acetonitrile as substrate, we investigated the abilities of these com-plexes to activate sp~3 C--H bond and promote insertion reaction of CO, CO_2 into metal-carbonbond. The experimental results show that the activity of (Ir(COD)(diphos))Cl is correlated to theelectronic property of diphosphine chelate ligand.
Three new organoiridium complexes were prepared from (Ir (COD) (μ-Cl)) _2 and di-phosphine in 1: 2 molar ratio, and characterized by means of IR, ~ 1H NMR elecric conductivity and elemental analysis. we investigated the abilities of these com-plexes to activate sp ~ 3 C - H bond and promote insertion reaction of CO, CO_2 into metal-carbonbond. The experimental results show that the activity of (Ir (COD) (diphos)) Cl is correlated to the phosphonic property of diphosphine chelate ligand.