CARBON-DIOXIDE ACTIVATION BY AZA-MACROCYCLIC COMPLEXES

Experimental observations of photocatalysis and electroinduced-activat ion of CO2 mediated by coordination compounds with aza-macrocyclic lig ands are discussed in this review. The production of fuels from the re duction of CO2 catalyzed by coordination complexes of simple tetraaza- macrocycles, porphyrin, phthalocyanine and biphenanthrolinic hexaazacy clophanes are described. The use of this macrocyclic chemistry, i.e. f or simple models, in the development of multipurpose supramolecular fu nctions is emphasized.