title: Resolution of Racemic 1,2-Dibromohexafluoropropane through Halogen-Bonded Supramolecular Helices.
abstract: Halogen bonds, attractive intermolecular interactions between perfluoroalkyl bromides and bromide ions, are present in cocrystals of (-)-sparteinium hydrobromide (1) and (S)-1,2-dibromohexafluoropropane (2; shown schematically), and result in enantiopure and infinite supramolecular helices. The perfluorocarbon-hydrocarbon self-assembly allows the resolution of racemic 2.
authors.affiliation: Dipartimento di Chimica, Politecnico di Milano, 7, via Mancinelli, I-20131 Milano (Italy).
authors.initials: A
authors.lastname: Farina
authors.initials: SV
authors.lastname: Meille
authors.initials: MT
authors.lastname: Messina
authors.initials: P
authors.lastname: Metrangolo
authors.initials: G
authors.lastname: Resnati
authors.initials: G
authors.lastname: Vecchio