Anisotropic interactional potentials for HeCH4, HeCH3Cl, HeCH2Cl2, HeCHCl3, and HeCCl4 from molecular beam scattering

Differential cross section (DCS) measurements are reported for scattering of a He atomic beam by crossed beams of CHnCl4−n (0≤n<≤4). Damping of the DCS diffraction oscillations is used to extract isotropic and anisotropic intermolecular potentials and to compare between the molecules and their symmetry. A common value for the well depth and the well location of bound state chlorine has been found (εCl=4.34 meV and RCl=300 pm).