9-(3-anthracen-9-ylpropyl)anthracene

6,7-dihydro-5H-1,4-dithiepine-2,3-dicarbonitrile

4,4'-dipyridyl-1,5-pentane

1,1,3,3-tetraethoxycarbonylcyclohexane

1-benzylcyclobutanecarbonitrile