3,3'-bis(trimethylsilylethynyl)tolane

1,2-bis(3-ethynylphenyl)ethyne

(4-ethynyl-2,3-dinitrophenylethynyl)trimethylsilane

3,3'-bis[(5''-tert-butylsulfanyl-2''-iodophenyl)ethynyl]tolane

5-(tert-butylsulfanyl)-2-nitrophenol