INTRAMOLECULAR BOND-LENGTH DEPENDENCE OF THE ANISOTROPIC DISPERSION COEFFICIENTS FOR INTERACTIONS OF RARE-GAS ATOMS WITH N2, CO, CL2, HCL AND HBR

Ab initio many body perturbation theory is used to calculate the imagi nary frequency multipole polarizabilities of N2, Cl2, CO, HCl and HBr as a function of bond length. These are combined with previously calcu lated dynamic polarizabilities for rare gas atoms to obtain the intram olecular bond length dependence of the anisotropic dispersion and indu ction coefficients through R-8 for AB-X (AB = N2, Cl2, CO, HCl, HBr an d X = He, Ne, Ar, Kr, Xe) interactions.