3,7-DIHALO-2H,6H-BENZO1,2-b:4,5-b′DITHIOPHENE-2,6-DIONE. NEW WURSTER-TYPE ACCEPTORS ISOELECTRONIC WITH 2,6-ANTHRAQUINONE

Abstract We describe the syntheses and properties of the new Wurster-type acceptors, 3,7-dihalo-2H,6H-benzo1,2-b:4,5-b′dithiophene-2,6-diones (2a) and (2b), which have C2h molecular symmetry with two sulfur atoms, together with the electrical resistivities of their CT complexes.