Comparison of models for H2–H2 and H2–He anisotropic intermolecular repulsion

Three empirical potential models (dumbbell, Kihara, and ellipsoidal overlap) are fitted to theoretical calculations of H2–H2 and H2–He repulsion. The dumbbell model gives a slightly better fit and has better transferability. This model is recommended because of its simplicity and physical meaningfulness.