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The relevance of the Laplacian of intracule and extracule density distributions for analyzing electron-electron interactions in molecules

A topological analysis of intracule and extracule densities and their Laplacians computed within the Hartree-Fock approximation is presented. The analysis of the density distributions reveals that among all possible electron-electron interactions in atoms and between atoms in molecules only very few are located rigorously as local maxima. In contrast, they are clearly identified as local minima in the topology of Laplacian maps. The conceptually different interpretation of intracule and extracule maps is also discussed in detail. An application example to the C2H2, C2H4, and C2H6 series of molecules is presented

© Journal of Chemical Physics, 1997, vol. 107, núm. 9, p. 3576-3583

American Institute of Physics

Author: Fradera i Llinàs, Xavier
Duran i Portas, Miquel
Mestres i López, Jordi
Date: 1997
Abstract: A topological analysis of intracule and extracule densities and their Laplacians computed within the Hartree-Fock approximation is presented. The analysis of the density distributions reveals that among all possible electron-electron interactions in atoms and between atoms in molecules only very few are located rigorously as local maxima. In contrast, they are clearly identified as local minima in the topology of Laplacian maps. The conceptually different interpretation of intracule and extracule maps is also discussed in detail. An application example to the C2H2, C2H4, and C2H6 series of molecules is presented
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Citation: Fradera, X., Duran, M., i Mestres, J. (1997). The relevance of the Laplacian of intracule and extracule density distributions for analyzing electron-electron interactions in molecules. Journal of Chemical Physics, 107 (9), 3576-3583. Recuperat 11 febrer 2011,a http://link.aip.org/link/doi/10.1063/1.474697
ISSN: 0021-9606 (versió paper)
1089-7690 (versió electrònica)
Document access: http://hdl.handle.net/10256/3244
Language: eng
Publisher: American Institute of Physics
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.1063/1.474697
Articles publicats (D-Q)
Is part of: © Journal of Chemical Physics, 1997, vol. 107, núm. 9, p. 3576-3583
Rights: Tots els drets reservats
Subject: Aproximació, Teoria de l’
Àtoms
Dinàmica molecular
Electrons
Enllaços químics
Funcional de densitat, Teoria del
Hartree-Fock, Teoria de
Hidrocarburs
Laplace, Transformacions de
Molècules
Approximation theory
Atoms
Chemical bonds
Density functionals
Hartree-Fock theory
Hydrocarbons
Laplace tranformations
Molecular dynamics
Molecules
Title: The relevance of the Laplacian of intracule and extracule density distributions for analyzing electron-electron interactions in molecules
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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