Synthesis, Structure, and Physical Properties of 4,5-Ethylenedithio-4,5-pentathiotetrathiafulvalene and Its Perchlorate Salt

New molecular conductors often involve tetrathiafulvalene (TTF) derivatives. These authors have focused on derivatives containing the pentathio group to obtain a novel intermolecular network by S–S contacts of these groups. Here is reported the synthesis, single-crystal structure, and electrochemical properties of the new donor 4,5-ethylenedithio-4,5-pentathio-TTF and its ClO4– salt. The temperature dependence of the electrochemical resistivity of a single crystal of the salt is semiconducting, while its electrical conductivity at room temperature is also comparatively high.