Experimental and Computational Probes of the Nature of Halogen Bonding: Complexes of Bromine-Containing Molecules with Bromide Anions
作者:Sergiy V. Rosokha、Charlotte L. Stern、Jeremy T. Ritzert
DOI:10.1002/chem.201300577
日期:2013.7.1
[RBr, Br−] complexes show intense absorption bands in the 200–350 nm range which follow the same Mulliken correlation as those observed for the charge‐transfer associates of bromide anions with common organic π‐acceptors. For a wide range of the associates, intermolecular RBr⋅⋅⋅Br− separations decrease and intramolecular CBr bond lengths increase proportionally to the Br−→RBr charge transfer; and the
卤键的性质通过一系列电bromocarbons R的联营的实验和计算表征检查溴R( BR = CBR 3楼CBR 3 NO 2,CBR 3 COCBr 3,CBR 3 CONH 2,CBR 3 CN等)和溴化物阴离子。的[R 溴,溴- ]配合物表现出在200-350纳米范围内强烈吸收带,其遵循相同的马利肯相关的那些用于与普通有机π共受体溴化物阴离子的电荷转移联营观察。对于广泛的同伴,分子间RBr⋅⋅⋅Br -分离减少和分子内Ç Br键长度成比例地增加于BR - →R 溴电荷转移; 和R的能量 Br⋅⋅⋅Br -键与轨道(电荷转移)和静电相互作用的线性组合相关。上的整体,光谱,结构和热力学特性[R 溴,溴- ]络合物表明除了静电,轨道(电荷转移)的相互作用在R发挥至关重要的作用 Br⋅⋅⋅Br -卤素键。这表明,除了控制超分子组装体的几何形状以外,卤素键还导致相互作用的物