Department of Chemistry2024-11-0920041432-881X10.1007/s00214-004-0586-z2-s2.0-4944234693http://dx.doi.org/10.1007/s00214-004-0586-zhttps://hdl.handle.net/20.500.14288/9157The very weak interaction of Li-2 with He atoms has been obtained from accurate ab initio calculations and is here analyzed in terms of its anisotropic features. Quantum scattering calculations of the rotational inelastic de-excitation cross sections are carried out using a recently proposed multichannel treatment, the modified variable phase method, implemented by the authors and applied here to ultralow collision energies. General conclusions on the low efficiency of a He buffer gas in cooling down molecular rotations in this system are presented and analyzed.Chemistry, physical and theoreticalConference proceeding1432-2234224546300009Q49902