Photoinduced and thermally induced rearrangements in a thianthrenium salt system
Abstract
A low-lying σ* level localized on a sulphur-carbon moiety in p-cyanobenzylthianthrenium trifluoromethanesulphonate allows facile photoinduced molecular rearrangements to occur via an in-cage fragmentation–recombination mechanism involving cation-radical–radical intermediates.