synthesis and characterization of aminocarboxylato iridium(iii) complexes

aminocarboxylic acids, such as 2-aminobenzoic acid, react easily with [ir(cod)(pme3)3]cl, (cod=1,5-cyclooctadiene), in thf to produce hydridoaminocarboxylato iridium(iii) complexes in high yields. these octahedral complexes are formed via oxidative addition reaction of the o-h bond of the carboxylic group with the central metal. the starting iridium(i) complex losses the cod molecule, the chloride is coordinated to the metal and the phosphine groups take a meridional position in the final products which are characterized by 1h, 13c and 31p nmr spectroscopies.