crystal structure;
frustrated Lewis pair;
halogen;
heterolysis;
electrophilic aromatic substitution;
D O I:
10.1107/S2056989015015467
中图分类号:
O7 [晶体学];
学科分类号:
0702 ;
070205 ;
0703 ;
080501 ;
摘要:
The title compound, C27H26.82BBr2.18N+center dot Br-3(-), is a cationic triarylborane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromomesityl groups. The molecule was prepared on combination of 3: 1 Br-2 and dimesityl(quinolin-8-yl) borane in hexanes. 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.