title: Halogen-bonded adduct of 1,2-dibromo-1,1,2,2-tetrafluoroethane and 1,4-diazabicyclo[2.2.2]octane.
abstract: Halogen bonding is an intermolecular interaction capable of being used to direct extended structures. Typical halogen-bonding systems involve a noncovalent interaction between a Lewis base, such as an amine, as an acceptor and a halogen atom of a halofluorocarbon as a donor. Vapour-phase diffusion of 1,4-diazabicyclo[2.2.2]octane (DABCO) with 1,2-dibromotetrafluoroethane results in crystals of the 1:1 adduct, C2Br2F4·C6H12N2, which crystallizes as an infinite one-dimensional polymeric structure linked by intermolecular N...Br halogen bonds [2.829 (3) Å], which are 0.57 Å shorter than the sum of the van der Waals radii.
authors.affiliation: School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
authors.forename: Alan K
authors.initials: AK
authors.lastname: Brisdon
authors.affiliation: School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
authors.forename: Abeer M T
authors.initials: AM
authors.lastname: Muneer
authors.affiliation: School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
authors.forename: Robin G
authors.initials: RG
authors.lastname: Pritchard
keywords: 1,4-diazabicyclo[2.2.2]octane; bromofluorocarbon trapping; crystal structure; dibromotetrafluoroethane; extended structures; halogen bonding; one-dimensional polymeric structure; phase change