Molecular Association Mediated by Nitrogen-Chlorine Donor-Acceptor Interactions
3,5-Bis(2-pyridylethynyl)-4-chloronitrobenzene (5) and 3,5-bisethynyl>-4-chloronitrobenzene (13) were synthesized as potential tridentate ligands, via nitrogen-chlorine donor-acceptor interactions, of 2,6-dichloropy