7-(o,o'-biphenylene)-3,4-dichloro-1,6-dicyano-9-methylbicyclo[4.4.0]deca-3,8-diene-2,5-dione

1,4-bis[[4-cyclopropyl-5-(9-fluorenylidene)pent-3-enyl]oxy]-2,3-dichloro-5,6-dicyanobenzene

7,8-Dichloro-6,9-dioxo-4-thiophen-2-yl-6,9-dihydro-naphtho[2,1-b]thiophene-5a,9a-dicarbonitrile

7-(thiophen-2-yl)benzo[b]thiophene-4,4,5,5-tetracarbonitrile

6,7-dichloro-3-methyl-5,8-dioxo-1,1-diphenyl-1,4,4a,5,8,8a-hexahydronaphthalene-4a,8a-dicarbonitrile