Covalent bond orders and atomic anisotropies from iterated stockholder atoms

Literature Information

Publication Date 2011-12-14
DOI 10.1039/C2CP23504H
Impact Factor 3.676
Authors

Richard J. Wheatley, Angelica A. Gopal


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Abstract

Iterated stockholder atoms are produced by dividing molecular electron densities into sums of overlapping, near-spherical atomic densities. It is shown that there exists a good correlation between the overlap of the densities of two atoms and the order of the covalent bond between the atoms (as given by simple valence rules). Furthermore, iterated stockholder atoms minimise a functional of the charge density, and this functional can be expressed as a sum of atomic contributions, which are related to the deviation of the atomic densities from spherical symmetry. Since iterated stockholder atoms can be obtained uniquely from the electron density, this work gives an orbital-free method for predicting bond orders and atomic anisotropies from experimental or theoretical charge density data.

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Physical Chemistry Chemical Physics
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