Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5417495 | Journal of Molecular Structure: THEOCHEM | 2009 | 7 Pages |
Abstract
DFT/B3LYP calculations were carried out on several Ï-complexes formed by cations and anions with annelated benzene, respectively. The binding energies obtained with standard method were corrected by basis set superposition error (BSSE) and zero-point energy (ZPE) during the geometry optimization for all complexes at the same levels of theory, respectively. Some different aspects of the Ï-cation have been compared to those of Ï-anion, involving in binding energy changes in effect of ring annelation, the aromaticity of the ring upon complexation, Mulliken and NBO charge-transfer. The effect of BSSE correction during the optimization is very important in some Ï-anion complexes whether or not using diffuse functions in basis set, and results with at least one set of diffuse functions 6-31+G(d) basis set is a little better than results obtained by 6-31G(d, p) basis set for some Ï-anion especially for Fâ complexes.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Xiao-Li Yuan, Hong Zhang, Fang-Jun Xie,