Photoreduction of the paraquat dication (1,1′-dimethyl-4,4′-bipyridinium) by visible light via its charge transfer complex with a dithioanion

Abstract

Photoproduction by visible light of the mild reductant 1,1′-dimethyl-4,4′-bipyridinium (PQ·⁺) occurs to an appreciable extent in acetonitrile via irradiation of the charge-transfer complex of PQ²⁺ with a dithioanion.