Quantum-Mechanical Cell Model of the Liquid State. II. Application to the Zero-Point Properties of Close-Packed Crystals

The quantum-mechanical cell model previously developed for liquids [J. M. H. Levelt and R. P. Hurst, J. Chem. Phys. 32, 96 (1960)] is adapted and used to evaluate zero-point properties of the noble gases, H2 and D2. Specifically, this theory is applied to determine the heats of sublimation, the zero-point energies and the equation of state for these gases at 0°K. By using the Lennard-Jones (6–12) intermolecular potential constants from second virial coefficients measurements as the only experimental parameters included in the theory, good agreement with the experimentally determined zero-point properties is generally obtained.