Abstract

Ab initio SCF calculations on the interaction of Li+ cation with H2O and H2CO using two basis sets are presented. Partitioning of SCF energies of interaction into Coulomb-, exchange- and delocalization energies has been performed. Coulomb- and delocalization energies are compared with classical electrostatic and polarization energies. A detailed analysis of the calculated wave functions demonstrates that in the complexes investigated here, charge transfer is of minor importance only. Polarization of the molecules in the strong inhomogeneous field of the cation leads to complicated electron density rearrangements which can be interpreted most easily in terms of polarization of individual localized MO's.

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