Supramolecular polymer formation featuring cooperative halogen-bonding and non-conventional sp2-CH---N hydrogen-bonding

Eric Bosch, Missouri State University
Nathan P. Bowling


The role of cooperative nonconventional hydrogen bonding and halogen bonding in the formation of supramolecular polymers is explored. In particular, the cocrystallization of 1-bromo-2,3,5,6-tetrafluorobenzene, or 1,2,4,5-tetrafluoro-3-iodobenzene, with each of the dipyridyls 4,4′-bipyridine, trans-1,2-bis(4-pyridyl)ethene, and 1,2-bis(4-pyridyl)ethyne results in the formation of linear supramolecular polymers in which the two components are held together by cooperative alternating nonconventional sp2-CH···N hydrogen bonds and halogen bonds.