Preparation and electrical properties of the novel TTP donors including the BETS unit

Six kinds of novel TTP derivatives including BETS skeleton (1a-1f) have been prepared. The crystal structures of (1b)(SbF 6 ) 0.36 and (1c)(Au(CN) 2 ) 0.36 6 were determined and these donor arrangements are so-called K-type. Temperature dependence of resistivity of (1f)(SbF 6 ) 0.32 revealed selenium atom substitution may suppress a metal-insulator transition.