期刊
COMPUTATIONAL AND THEORETICAL CHEMISTRY
卷 981, 期 -, 页码 1-6出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.comptc.2011.11.013
关键词
Intermolecular interaction; X3LYP; Laplacian properties; Energy decomposition analysis
资金
- National Natural Science Foundation of China [20803083, 21172066]
- Hunan Provincial Natural Science Foundation of China [10114011]
The geometries, interaction energies, tautomerization processes, electron density and Laplacian properties of the weak interaction systems formed by heteroaromatic rings (C4H4O. C4H4S and C5H5N) and Lewis acids (ClF, HCl) have been studied at the spin-restricted DFT method (X3LYP) with the aug-cc-pVTZ basis sets. Two types of interactions are observed among these systems: the a-type and the it-type geometry. The low energy barriers (<2.3 kcal/mol) demonstrate that the a-type and it-type angular geometries of C4H4O/C4H4S center dot center dot center dot ClF/HCl complexes are easily transformed from each other. The nature of the intramolecular interactions has been also investigated through both the theory of atoms in molecules (AIM) and energy decomposition analysis. (C) 2011 Elsevier B.V. All rights reserved.
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