Bis(ethylenedithio)tetraselenafulvalene

4,5-ethylenedithio-4',5'-(methylenedithio)diselenadithiafulvalene

2,3,6,7-tetramethoxycarbonyl-tetrathiafulvalene

dimethyl 2-([1,3]dithiolo[4,5-d][1,3]dithiol-2-ylidene)-1,3-dithiole-4,5-dicarboxylate