Facile synthesis of N,N '-ethylenebisthiazolium salts: Precursors of dithiadiazafulvalenes

Bis-thiazolium salts, precursors of dithiadiazafulvalene (DTDAF), have been prepared. Electrochemical investigations have been carried out on these sa lts in order to determine the redox behavior of DTDAF. These bis-thiazolium salts undergo intramolecular coupling, either chemically or electrochemica lly, to afford N,N'-ethylene bridged DTDAF.