HX...MX3 MOLECULES - HETERODIMER VAPOR-PHASE COMPLEXES (M = B, AL, X = F, CL) WITH HALOGEN BRIDGES - AN AB-INITIO MOLECULAR-ORBITAL STUDY

The equilibrium structures of HX ... MX3 vapour phase complexes are ex amined at the Hartree-Fock level using the DZP basis set. The complexe s are found to be weak electron pair donor-acceptor adducts with long and weak intermolecular halogen bridges and with the hydrogens interac ting with one of the halogen atoms of MX3 in a cyclic arrangement. The energies of complex formation are calculated with and without correct ion for the basis set superposition error.