benzo<1,2-c:3,4-c':5,6-c''>tricinnoline

1-vinyl-2-[2-(2-vinylphenyl)ethynyl]benzene

2,2'-Bis-[α,β-dibrom-aethyl]-diphenyl-acetylen

2,2'-Bis-[triphenylphosphoniomethyl]-diphenylenacetylen-dibromid

carbon monoxide