2,5-Bis(1,3-dithiol-2-ylidene)-2,5-dihydrothiophene and its bis(alkylthio) derivatives: a new synthetic approach to thienoquinonoid-extended tetrathiafulvalenes and their conductive complexes

Abstract

Bis(dithiolylidene)dihydrothiophene and its unsymmetrically substituted bis(alkylthio) derivatives, giving stable radical cations and dications on two-step one-electron oxidations, have been efficiently synthesized by convenient methods and electrical properties of their conductive complexes are described.