2019, Vol.48, No.8


A bis-fused donor composed of dimethyl-tetrathiafulvalene and tetraselenafulvalene (DM-ST-STP) was successfully synthesized. X-ray structure analysis of the salts with PF6 and AsF6 anions revealed that the molecular packing could be classified as β-type. A tight-binding band calculation suggested these salts had a quasi-one-dimensional Fermi surface. They exhibited high conductivity of σrt = 390–540 S cm−1 and metallic behavior down to low temperature.