Electron correlation and solvation effects. I, Basic formulation and preliminary attempt to include the electron correlation in the quantum mechanical polarizable continuum model so as to study solvation phenomena

Abstract In this paper we present a formulation of the Polarizable Continuum Model including the consideration of the electron correlation. Three levels of complexity in the method are considered, the first two introducing a partial decoupling of solvation and correlation effects. Third order calculations show a clear influence of electron correlation on the solvation energy and parallel influence of solvent polarization effects on the correlation energy. The analysis has been performed over a representative set of solutes, also taking into consideration the most significant observables.

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