Controlling the Coordination Mode of 1,4,7-Triazacyclononane Complexes of Rhodium and Iridium and Evaluating Their Behavior as Phenylacetylene Polymerization Catalysts

A number of κ1- and κ3-triazacyclononane RhI, Ir1, RhIII, and IrIII derivatives have been synthesized and characterized, with conversion from κ1-triazacyclononane complexes to κ3-derivatives. The results of the catalytic studies show that the Rh(I) and Ir(I) complexes polymerize phenylacetylene more effectively than [M(COD)(μ-Cl)]2 (M = Rh and Ir).