title: Crystal structure of bis-(3-bromo-mesit-yl)(quino-lin-1-ium-8-yl)boron(III) tribromide.
abstract: The title compound, C27H26.82BBr2.18N(+)·Br3 (-), is a cationic tri-aryl-borane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromo-mesityl groups. The mol-ecule was prepared on combination of 3:1 Br2 and dimesit-yl(quinolin-8-yl)borane in hexa-nes. The refinement of the structure indicated a degree of 'over-bromination' (beyond two bromine atoms) for the cation. There are two tribromide ions in the asymmetric unit, both completed by crystallographic inversion symmetry.
authors.affiliation: Department of Chemistry, University of South Dakota, 414 E. Clark St, Vermillion, SD 57069, USA.
authors.forename: Jungho
authors.initials: J
authors.lastname: Son
authors.affiliation: Department of Chemistry, University of South Dakota, 414 E. Clark St, Vermillion, SD 57069, USA.
authors.forename: Sem Raj
authors.initials: SR
authors.lastname: Tamang
authors.affiliation: Department of Chemistry, University of South Dakota, 414 E. Clark St, Vermillion, SD 57069, USA.
authors.forename: James D
authors.initials: JD
authors.lastname: Hoefelmeyer
keywords: crystal structure; electrophilic aromatic substitution; frustrated Lewis pair; halogen; heterolysis