Rhodium(i), rhodium(iii) and iridium(iii) carbaporphyrins

Abstract

Treatment of a benzocarbaporphyrin with [Rh(CO)₂Cl]₂ in refluxing dichloromethane gave a rhodium(I) dicarbonyl complex, and further reaction in refluxing pyridine afforded an organometallic rhodium(III) derivative. The carbaporphyrin also reacted with [Ir(COD)Cl]₂ and pyridine in refluxing p-xylene to generate a related iridium(III) compound. These novel metalated porphyrinoids retained strongly diatropic characteristics and were fully characterized by XRD.