Polybromides of pyridinium and quinolinium-type cations: Cation-induced structural diversity and theoretical analysis of Br ••• Br interactions

被引:9
|
作者
Gorokh, Igor D. [1 ,2 ]
Adonin, Sergey A. [1 ,2 ]
Novikov, Alexander S. [3 ]
Sokolov, Maxim N. [1 ,4 ]
Samsonenko, Denis G. [1 ,2 ]
Fedin, Vladimir P. [1 ,2 ]
机构
[1] RAS, Nikolaev Inst Inorgan Chem SB, 3 Lavrentiev Av, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Pirogova St 2, Novosibirsk 630090, Russia
[3] St Petersburg State Univ, Inst Chem, Univ Skaya Nab 7-9, St Petersburg 199034, Russia
[4] Kazan Fed Univ, Alexander Butlerov Inst Chem, Lobachevskogo St 1-29, Kazan 420008, Russia
基金
俄罗斯科学基金会;
关键词
Polybromides; QTAIM; Halogen bonding; X-ray diffractometry; Supramolecular contacts; IODINE HALOGEN BOND; HETEROCYCLIC CATIONS; IONIC-LIQUID; BROMINE; HYDROGEN; ENERGIES; CRYSTALS; AMMONIUM; CLUSTERS; COMPLEX;
D O I
10.1016/j.molstruc.2018.11.070
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Four novel polybromide salts containing pyridinium-type and quinolinium-type cations - {(2-Br-5-MePy)(2)H}Br-3 (1), (1,3,5-MePy){(Br-3) (Br-2)} (2), (1-Et-2,6-MePy){(Br-3) (Br-2)(0.5)} (3) and (N-Melsoquin) {(Br-3)(Br-2)(0.5)} (4) were isolated from HBr/Br-2 solutions. Hirshfeld surface analysis for the organic parts of X-ray structures of 1-4 and a set of related compounds reported earlier reveals that in all cases crystal packing is determined primarily by intermolecular contacts Br-H, H-H, C-H, Br-Br, and Br-C. DFT calculations allowed estimation of Br center dot center dot center dot Br halogen bonding energies (0.9-7.5 kcal/mol). (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:725 / 731
页数:7
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