Imidazo[1,5]carbachlorin as a hybrid ligand

Abstract

A family of novel complexes of imidazo[1,5]carbachlorin has been synthesized and characterized by spectroscopic, X-ray diffraction, and electrochemical methods. In most of these compounds, both macrocyclic crevice and the fused external imidazole are involved in the coordination of the metal ion, thus defining imidazocarbachlorin as a hybrid ligand system consisting of NNNC- and N-donor sets. The effect of the external coordination on the shape of the macrocyclic ring has been studied and discussed.