Journal
SCIENCE CHINA-CHEMISTRY
Volume 58, Issue 3, Pages 495-500Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-014-5147-2
Keywords
ionic liquid; interaction; hydrogen bond; Z-bond
Categories
Funding
- National Natural Science Foundation of China [21036007]
- Fund of State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences [MPCS-2012-A-10]
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The hydrogen-bond interactions in ionic liquids have been simply described by the conventional hydrogen-bond model of A-Ha <-B. Coupling with the strong electrostatic force, however, hydrogen bond between the cation and anion shows particular features in the geometric, energetic, electronic, and dynamic aspects, which is inherently different from that of the conventional hydrogen bond. A general model could be expressed as (+)[A-Ha <-B](-), in which A and B represent heavy atoms and + and -aEuroe represent the charges of the cation containing A atom and anion containing B atom, respectively. Because the structure shows a zig-zag motif, this coupling interaction is defined here as the Z-bond. The new model could be generally used to describe the interactions in ionic liquids, as well as bio-systems involved in ions, ionic reaction, and ionic materials.
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