New radical-cation salts containing an unsymmetrically substituted TTF or TSF type π -donor. Synthesis and characterization

A number of unsymmetrically substituted tetraheterofulvalenes have been prepared. Their half wave potentials have been measured by cyclic voltammetry and compared with that of TTF. Their perchlorate and hexafluorophosphate salts have been electrochemically synthesized and their electrical properties studied. Some structural data are also given.