Benzobis(thiadiazole)s Containing Hypervalent Sulfur Atoms: Novel Heterocycles with High Electron Affinity and Short Intermolecular Contacts between Heteroatoms

Abstract

Ribbon-type columns linked to form a network are found in the crystal structure of 1, R = Br. This compound differs significantly from the Kekulé-type analogue 2 in terms of its electron affinity and the position of its UV/VIS absorption maximum. The monoselenium analogues of 1 were also synthesized and characterized.