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  • Title: Relative complexation energies for Li(+) ion in solution: molecular level solvation versus polarizable continuum model study.
    Author: Eilmes A, Kubisiak P.
    Journal: J Phys Chem A; 2010 Jan 21; 114(2):973-9. PubMed ID: 20030307.
    Abstract:
    Relative complexation energies for the lithium cation in acetonitrile and diethyl ether have been studied. Quantum-chemical calculations explicitly describing the solvation of Li(+) have been performed based on structures obtained from molecular dynamics simulations. The effect of an increasing number of solvent molecules beyond the first solvation shell has been found to consist in reduction of the differences in complexation energies for different coordination numbers. Explicit-solvation data have served as a benchmark to the results of polarizable continuum model (PCM) calculations. It has been demonstrated that the PCM approach can yield relative complexation energies comparable to the predictions based on molecular-level solvation, but at significantly lower computational cost. The best agreement between the explicit-solvation and the PCM results has been obtained when the van der Waals surface was adopted to build the molecular cavity.
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