A modern solvation theory: quantum chemistry and statistical chemistry.

This perspective highlights recent developments in the field of statistical mechanics for molecular liquids, i.e. the integral equation (IE) theory, especially focusing on hybrid approaches incorporating quantum chemistry and IE theory. The electronic structure of solvated molecules is characterized, followed by recent developments and applications. The latter includes for some specific systems: evaluation of acidity, basicity, pH and pKa, chemical equilibrium and molecular structure, chemical reactions, ionization and electron transfer reactions, as well as excited states and their free energy.