Second Virial Coefficient for the Spherical Shell Potential

Abstract

Values of the second virial coefficient for the three‐parameter spherical shell potential are tabulated over wide ranges of temperature and shell size. The potential, which is not new, results from the interaction of two spherical surfaces having uniform distributions of Lennard‐Jones (6–12) sites.An objective comparison is made between the tabulated values and the literature values for second virial coefficients, from which the potential parameters for twenty compounds are determined. Generally, the spherical shell potential generates a better fit than does the parent Lennard‐Jones potential. The potential parameters found are in good agreement with expectations based upon density and interatomic distance data