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Theoretical Basis for the Treatment of Solvent Effects in the Context of Density Functional Theory

  • Renato Contreras
  • Patricia Pérez
  • Arie Aizman
Part of the Understanding Chemical Reactivity book series (UCRE, volume 17)

Abstract

Theoretical considerations leading to a density functional theory (DFT) formulation of the reaction field (RF) approach to solvent effects are discussed. The first model is based upon isolelectronic processes that take place at the nucleus of the host system. The energy variations are derived from the nuclear transition state (ZTS) model. The solvation energy is expressed in terms of the electrostatic potential at the nucleus of a pseudo atom having a fractional nuclear charge. This procedure avoids the introduction of arbitrary ionic radii in the calculation of insertion energy, since all integrations involved are performed over [0, ∞]. The quality of the approximations made are discussed within the frame of the Kohn-Sham formulation of density functional theory.

Introduction of the static density response function for a system with a constant number of electrons yields the RF - DFT model. This second approach is expected to be more useful in the analysis of chemical reactivity in condensed phases.

Keywords

Density Functional Theory Solvation Energy Electrostatic Potential Solvent Effect Reaction Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Renato Contreras
    • 1
  • Patricia Pérez
    • 1
  • Arie Aizman
    • 2
  1. 1.Departamento de Quimica, Centro de Mecanica Cuantica Aplicada, Facultad de CienciasUniversidad de ChileCasilla 653- SantiagoChile
  2. 2.Departamento de Quimica, Facultad de CienciasUniversidad Tecnica Federico Santa MariaCasilla 110 — V, ValparaisoChile

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