A systematic structural study of halogen bonding versus hydrogen bonding within competitive supramolecular systems.

ABSTRACT: As halogen bonds gain prevalence in supramolecular synthesis and materials chemistry, it has become necessary to examine more closely how such interactions compete with or complement hydrogen bonds whenever both are present within the same system. As hydrogen and halogen bonds have several fundamental features in common, it is often difficult to predict which will be the primary interaction in a supramolecular system, especially as they have comparable strength and geometric requirements. To address this challenge, a series of molecules containing both hydrogen- and halogen-bond donors were co-crystallized with various monotopic, ditopic symmetric and ditopic asymmetric acceptor molecules. The outcome of each reaction was examined using IR spectroscopy and, whenever possible, single-crysta

SUBMITTER: Aakeroy CB 

PROVIDER: S-EPMC4547818 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature