A twin-TCNQ-type acceptor: synthesis of 11,11,12,12,13,13,14,14-octacyano-1,4:5,8-anthradiquinotetramethane and the structure of its (1 : 1) tetraethylammonium salt
Abstract
Bromination of octahydroanthracene with N-bromosuccinimide (NBS) followed by dicyanomethylation with excess of NaCH(CN)2 followed by repetition of the successive bromination–dehydrobromination procedure gives the title compound (20%), the structure of which has been confirmed by X-ray analysis of its monoanionic semiconductor Et4N+ salt.