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  • Title: Coupled reference interaction site model/simulation approach for thermochemistry of solvation: theory and prospects.
    Author: Freedman H, Truong TN.
    Journal: J Chem Phys; 2004 Aug 01; 121(5):2187-98. PubMed ID: 15260773.
    Abstract:
    We present a new methodology for computing solvation free energy, which is based upon the reference interaction site model (RISM)/hypernetted chain (HNC) solvation free energy expression, but which substitutes radial distribution functions taken from simulations for those calculated by simultaneous solution of the RISM and HNC equations. Consequently, solvation free energy can be obtained from a single molecular dynamics or Monte Carlo simulation. Here we describe in detail the coupled RISM/simulation approach, and offer some error analysis. Finally we give the results of its application to a set of small test molecules in aqueous solution. The success shown in some of our results demonstrates that the coupled RISM/simulation approach is worth considering further as a potentially useful tool in studies of solvated systems, such as aqueous molecular biosystems.
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