5-(4-methylphenyl)sulfonyl-[1,3]dithiolo[4,5-c]pyrrol-2-one

5-(4-methylphenyl)sulfonyl-[1,3]dithiolo[4,5-c]pyrrole-2-thione

2-([1,3]dithiolo[4,5-d]pyridazin-2-ylidene)-[1,3]dithiolo[4,5-d]pyridazine

4,4',5,5'-tetrakis(diethoxymethyl)-2,2'-bi(1,3-dithiolylidene)