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The effect of counterpoise correction and relaxation energy term to the internal rotation barriers: application to the BF3 ...NH3 and C2H4 ...SO2 dimers

The relevance of the fragment relaxation energy term and the effect of the basis set superposition error on the geometry of the BF3⋯NH3 and C2H4⋯SO2 van der Waals dimers have been analyzed. Second-order Møller-Plesset perturbation theory calculations with the d95(d,p) basis set have been used to calculate the counterpoise-corrected barrier height for the internal rotations. These barriers have been obtained by relocating the stationary points on the counterpoise-corrected potential energy surface of the processes involved. The fragment relaxation energy can have a large influence on both the intermolecular parameters and barrier height. The counterpoise correction has proved to be important for these systems

© Journal of Chemical Physics, 1999, vol. 111, núm. 10, p. 4460-4465

American Institute of Physics

Author: Salvador Sedano, Pedro
Duran i Portas, Miquel
Date: 1999
Abstract: The relevance of the fragment relaxation energy term and the effect of the basis set superposition error on the geometry of the BF3⋯NH3 and C2H4⋯SO2 van der Waals dimers have been analyzed. Second-order Møller-Plesset perturbation theory calculations with the d95(d,p) basis set have been used to calculate the counterpoise-corrected barrier height for the internal rotations. These barriers have been obtained by relocating the stationary points on the counterpoise-corrected potential energy surface of the processes involved. The fragment relaxation energy can have a large influence on both the intermolecular parameters and barrier height. The counterpoise correction has proved to be important for these systems
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Citation: Salvador, P., i Duran, M. (1999). The effect of counterpoise correction and relaxation energy term to the internal rotation barriers: Application to the BF3⋯ NH3 and C2H4 ⋯SO2 dimers. Journal of Chemical Physics, 111 (10), 4460-4465. Recuperat 23 març 2011 a, http://link.aip.org/link/doi/10.1063/1.479209
ISSN: 0021-9606 (versió paper)
1089-7690 (versió electrònica)
Document access: http://hdl.handle.net/10256/3291
Language: eng
Publisher: American Institute of Physics
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.1063/1.479209
Articles publicats (D-Q)
Is part of: © Journal of Chemical Physics, 1999, vol. 111, núm. 10, p. 4460-4465
Rights: Tots els drets reservats
Subject: Energia de superfície
Pertorbació (Matemàtica)
Rotació molecular
Molecular rotation
Perturbation (Mathematics)
Surface energy
Title: The effect of counterpoise correction and relaxation energy term to the internal rotation barriers: application to the BF3 ...NH3 and C2H4 ...SO2 dimers
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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