The new 7r-donor bis-(phenylenedithio)-tetrathiafulvalene (5), synthesized via phosphite coupling o f 2-oxo-l,3-dithiolo-[4,5b][l,4]-benzodithiin (4), has been prepared in 5 steps start ing from 1,2-dimercaptobenzene and chloroacetyl chloride. Spectroscopic and electrochemical data point to a close similarity o f 5 and dibenzo-tetrathiafulvalene (DB-TTF). 5 forms a highly conducting radical-ca...