Structure and Physical Properties of Two Perchlorate Salts Derived from a Novel Twin Donor. Bis(4′,5′-ethylenedithio-5-methylthiotetrathiafulvalenyl-4-thio)methane

Abstract

Abstract A twin donor (1) which consists of two BEDT-TTF moieties linked by a methylenedithio bridge was prepared. Two radical salts of ClO4− with the stoichiometry of 1:1 and 2:1 were obtained through electrochemical crystallization. In the salt of 1•ClO4, the donor has a phane-like conformation. A magnetic behavior of the salt was interpreted by the one-dimensional antiferromagnetic Heisenberg model. On the other hand, the donor exist as a twist phane like conformation in the salt of 1•(ClO4)0.5 and the salt is a semiconductor (σrt = 0.1 S cm−1) with an activation energy of 5 × 10−2 eV.