Brisdon Alan K, Muneer Abeer M T, Pritchard Robin G
School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
Acta Crystallogr C Struct Chem. 2015 Oct;71(Pt 10):900-2. doi: 10.1107/S2053229615016472. Epub 2015 Sep 18.
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.
卤键是一种能够用于构建扩展结构的分子间相互作用。典型的卤键体系涉及作为受体的路易斯碱（如胺）与作为供体的卤代氟烃的卤原子之间的非共价相互作用。1,4 - 二氮杂双环[2.2.2]辛烷（DABCO）与1,2 - 二溴四氟乙烷的气相扩散生成了1:1加合物C₂Br₂F₄·C₆H₁₂N₂的晶体，该晶体以通过分子间N...Br卤键[2.829 (3) Å]连接的无限一维聚合物结构形式结晶，该卤键比范德华半径之和短0.57 Å。
