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Extended electron distributions applied to the molecular mechanics of some intermolecular interactions
1Cambridge Centre for Molecular Recognition, Department of Chemistry, University of Cambridge, U.K.
Journal of Computer-Aided Molecular Design
|December 1, 1994
Abstract:
Extended electron distributions (XEDs) have been added to the molecular mechanics Coulombic term and applied to a selection of intermolecular interactions. The results from this approach have been compared with the commonly used atom-centred charges and more rigorous AM1-derived natural atom orbital point densities. The use of XEDs generally improves the simulation of experimental and ab initio results over the other two charge allocations and corrects geometries in those cases for which the others yield wrong results.