2,2'-dideutero-1,1'-bi(1-cycloocten-1-yl)

2-ethyl-1,1'-bi(1-cycloocten-1-yl)

2,2'-dibromo-1,1'-bi(cyclopent-1-en-1-yl)

2,2'-Dibromo-1,1'-bi(2-cyclohexen-1-yl)

2,2'-Dibutyl-1,1'-bi(1,4-cyclohexadiene)

2,2',5,5'-Tetrahydroxy-4,4'-bis[(2E,6E,10E)-3,7,11,15-tetramethyl-2,6,10,14-hexadecatetrenyl]-1,1'-bi-[1,4-cyclohexadiene]-3,3',6,6'-tetrone

Ethanol,2,2'-[[1,1'-binaphthalene]-2,2'-diylbis(oxy)]bis-