Discrete wavelets are applied to parametrize the radial distribution functions of hydrated ions and hydrophobic solutes. The data on radial distribution functions are derived from the integral equation theory and neutron scattering experiment. The Coifman and the discrete Meyer basis sets are used for the wavelet approximation. The quality of the approximation is verified by calculations of the solvation energy, the coordination number, and the change in chemical potential of solutes.

• Received 20 February 2003

DOI:https://doi.org/10.1103/PhysRevE.68.027702