Preparation, Crystal Structure and Electrical Properties of 2-Cyclopentanylidene-1,3-dithiolo(4,5-d)tetrathiafulvalene Derivatives.
The title compounds (1) were prepared as the donor components for organic conductors. The molecular and crystal structures of bis(methylthio) derivative were determined by X-ray diffractional analysis. Among charge-transfer complexes and cation radical salts of 1 prepared so far, I3− salt of unsubstituted-1 and IBr2− salt of methylenedithio-1 showed metallic temperature dependence of conductivities.