ChemInform Abstract: Preparation and Properties of 7-(1,3-Dithiol-2-ylidene)-7H-cyclopenta( 1,2-b;4,3-b′)dithiophenes and Their Polymers

The title 1,3-dithiole compounds which were synthesized using a Wittig-Hornor reaction have a planar structure with both inter- and intramolecular short S···S contacts. Their electrochemical oxidation gave polythiophene derivatives which have lower oxidation potentials than polythiophene and the conductivity of the nonsubstituted derivative was 3.5 × 10−3 S cm−1.