Preparation and Characterization of Novel Aromatic-inserted Tris-fused Tetrathiafulvalenes

New families of extended tris-fused TTFs, in which aromatic rings are inserted, have been synthesized. Cyclic voltammetry and theoretical calculation of them indicate electronic structure of the furan and thiophene derivatives may be regarded as tris-fused TTFs, whereas the benzene derivative as a dimeric (2-methylidene-1,3-dithiolo[4,5-d])-TTF.