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 κ 1 - and κ 3 -triazacyclononane Rh I, Ir 1, Rh III, and Ir III derivatives have been synthesized and characterized, with conversion from κ 1 -triazacyclononane complexes to κ 3 -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).