Interaction of halogen anions with some cations and inert gas atoms

We present a unified analysis of the interaction of halogen anions with some cations and inert gas atoms, within the framework of a perturbative approach. The Born–Mayer repulsion term is evaluated using asymptotic densities and correlation functions. Along with the long-range polarizability and van der Waals terms, this term gives a satisfactory description of the interaction energy for halogen ions interacting with some cations and inert-gas atoms.