Journal
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
Volume 4, Issue 11, Pages 1835-1840Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ct8002282
Keywords
-
Funding
- Ministry of Education, Youth and Sports of the Czech Republic [LC512]
- Agency of the Academy of Sciences of the Czech Republic [A400550510]
- Praemium Academiae of the Academy of Sciences of the Czech Republic
- [Z4 055 0506]
Ask authors/readers for more resources
The dynamic nature of the benzene dimer was explored by on-the-fly molecular dynamics simulations based on the DFT-D method covering the dispersion energy. An all-electron DFT was performed at the BLYP/TZVP level. The parameters in the dispersion correction term were fitted to mimic the benchmark CCSD(T)/complete basis set limit potential energy curves for both the parallel-displaced (PD) and T-shaped (TS) structures of the dimer exactly. A dynamic description is important at temperatures above 10 K, where interconversion between the TS and PD structures is possible and a mixture of these two species exists. The higher the temperature, the more dominant the TS structure because of a favorable entropic contribution to the free energy. An analysis of the TS structures revealed that the symmetric C-2v structure, a low-lying transition state, is practically not populated and that the tilted C-s TS structure is prevalent. This finding is in perfect agreement with infrared spectroscopy.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available