C-H•••O hydrogen bonds in imidazolium carboxylates

被引：6
|
作者：
Abu-Rayyana, Ahmed
Abu-Salem, Qutaiba [1 ]
Kuhn, Norbert [1 ]
Maichle-Moessmer, Cacilia [1 ]
Mallah, Eyad [1 ]
Steimann, Manfred [1 ]
机构：
[1] Univ Tubingen, Inst Anorgan Chem, D-72076 Tubingen, Germany
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2008年 / 63卷 / 08期
关键词：
hydrogen bonds; crystal structure; imidazoles; heterocycles;
D O I：
10.1515/znb-2008-0816
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
2,3-Dihydro-1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (1) reacts with benzoic acid to give the corresponding 1,3-diisopropyl-4,5- dimethylimidazolium benzoate salt 2. Similarly, 1,3-diisopropyl-4,5-dimethylimidazolium formiate (3) is obtained from 1 and ammonium formiate. In crystals of 2, the anions are linked to the imidazolium ions by monofunctional O center dot center dot center dot H-C bonds while in 3 bifurcated O center dot center dot center dot H-C bonds are observed. In 1,3-diisopropyl-4,5-dimethylimidazolium hydrogenoxalate (4), obtained from 1 and oxalic acid, hydrogen bonds connect both imidazolium ions to the hydrogenoxalate ions in a bifurcated mode as well as the anions to each other.
引用
收藏
页码：1015 / 1019
页数：5
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