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Electron pairing and chemical bonds. Chemical structure, valences and structural similarities from the analysis of the Fermi holes

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Abstract

A new method of visualisation of bonding in molecules is introduced. The method is based on the analysis of Fermi holes associated with conditional probabilities of finding one electron of the pair provided the second, reference, electron is localised in a certain molecular region. Based on this analysis it is possible to get a clear and highly visual insight into the structure of molecular fragments (functional groups) in molecules. In addition to this visualisation, the new approach opens the possibility of the new definition of atomic and group valence and, also, can be applied as a new means of the quantitative characterisation of similarity of structural fragments in the series of related molecules.

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Ponec, R. Electron pairing and chemical bonds. Chemical structure, valences and structural similarities from the analysis of the Fermi holes. Journal of Mathematical Chemistry 21, 323–333 (1997). https://doi.org/10.1023/A:1019186806180

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