Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex towards the Selective Formation of Formic Acid.

A highly efficient tetradentate PNNP-type Ir photocatalyst, Mes-IrPCY2, was developed for the reduction of carbon dioxide (CO2). The photocatalyst furnished formic acid (HCO2H) with 87% selectivity...