The Influence of Hydrogen-Bond Defects on the Properties of Ionic Liquids

被引:114
|
作者
Peppel, Tim [1 ]
Roth, Christian [2 ]
Fumino, Koichi [2 ]
Paschek, Dietmar [2 ]
Koeckerling, Martin [1 ]
Ludwig, Ralf [2 ,3 ]
机构
[1] Univ Rostock, Inst Chem, Abt Anorgan Chem, D-18059 Rostock, Germany
[2] Univ Rostock, Inst Chem, Phys Chem Abt, D-18059 Rostock, Germany
[3] Univ Rostock eV, Leibniz Inst Katalyse, D-18059 Rostock, Germany
关键词
ab initio calculations; crystal structures; hydrogen bonding; ionic liquids; melting points; MELTING-POINTS; TEMPERATURE; CATION; PREDICTION; BROMIDES; SALTS;
D O I
10.1002/anie.201100199
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Counterintuitive: The preformation of ion pairs can explain the low melting points of imidazolium-based ionic liquids (ILs) and the resulting expanded range of working temperatures. This quasi-ion-pair formation is possible for ILs having cations with only one interaction site leading to local and directional hydrogen bonds with the corresponding anion (see structure; O red, N blue, F green, S yellow). Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:6661 / 6665
页数:5
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