Coordination polymers with a pyridyl-salen ligand for photocatalytic carbon dioxide reduction

A new ligand H2L with pyridine and salen moieties and its coordination polymers (CPs) [Mn(L)Cl]center dot DMF (1) and [Fe(L)Cl]center dot DMF (2) were synthesized and their photocatalytic activity for the conversion of CO2 into CO under visible-light irradiation was investigated. This is the first instance of pyridyl-salen-ligand based CPs for photocatalyzing CO2 reduction.