Folded conformation of 5,15-diarylporphyrins with anthraquinonyl and dimethylaminophenyl groups attached via a sulphonyloxy group
Abstract
Free base porphyrins with 2-anthraquinonyl and 4-dimethylaminophenyl groups attached through a sulphonyloxy link show remarkable preference for a folded conformation; introduction of zinc causes a conformational change, probably by intramolecular co-ordination.