Synthesis of Pyrazinodithiadiselenafulvalenes. New Unsymmetrical π-Donors

Abstract
Unsymmetrical dithiadiselenafulvalenes, which are annelated on the 1,3-dithiole or 1,3-dise1enole moiety to a 1,4-pyrazine ring, have been prepared by the cross coupling method and characterized as electron-donors for use in conductive charge-transfer salts.