Unusually stable monothiolate and S/N, S/O mixed ligand complexes of iron(III) tetramesitylporphyrin

Abstract

The reaction of tetramesitylporphinatoiron(III) hydroxide with ethyl 3-mercaptopropionate in toluene generates the air and temperature stable five co-ordinate iron(III) monothiolate complex, which adds imidazole or other Lewis base to give a six co-ordinate adduct, the unusual stability of which allows characterization by UV-VIS spectrophotometry at room temperature.