Alkyne-containing chelating ligands: synthesis, properties and metal coordination of 1,2-di(quinolin-8-yl)ethyne

A new alkyne-containing chelating ligand, 1,2-di(quinolin-8-yl)ethyne, is shown to form a mononuclear 1 : 1 complex with silver(I) and chelate the metal ion through both nitrogens and the ethyne moiety as seen by UV and NMR spectroscopy as well as X-ray crystallography.