Photochemical CO2 reduction with mononuclear and dinuclear rhenium catalysts bearing a pendant anthracene chromophore

A series of anthracene-substituted mononuclear and dinuclear rhenium complexes have been studied for photocatalytic CO2 reduction. The effects on catalytic activity of one versus two covalently-linked active sites, their relative proximity to one another, and the pendant organic chromophore are discussed.