Synthesis and Characterization of Radical Cation Salts Derived from Tetraselenafulvalene and Bis(Ethy1enedithio)tetraselenafulvalene

Abstract
New synthetic routes to bis(ethylenedithio)tetraselenafulvalene (BETS) were explored, starting from tetraselenafulvalene (TSF). Several radical cation salts of TSF and BETS were prepared by electrocrystallization. A new kappa phase salt of BETS, K-(BETS)2GaCl4, displayed an interesting resistance-temperature profile from 300-35K.