EVALUATING THE NATURE OF CHEMICAL BONDS BASED ON PROBABILISTIC MODELS

A. Mohajeri () and P. Dasmeh
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A. Mohajeri: Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran
P. Dasmeh: Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran

International Journal of Modern Physics C (IJMPC), 2007, vol. 18, issue 11, 1795-1809

Abstract: A theoretical measure of the ionicity based on different mathematical concepts is presented in this research. Considering the distribution of valence electrons on each atom in a bond, we assume that the chemical properties of the atom can be expressed by means of probability. Using the introduced probability, different probabilistic models such as classical, fuzzy and information theoretical models have been employed to introduce new descriptors of bond ionicity. The ionicities were calculated for 12 heterodiatomic molecules and the bonds were classified in terms of covalency vs. ionicity. It was found that our proposed ionicity descriptors correlate well with the partial ionic character of the bonds.

Keywords: Ionicity descriptor; fuzzy-logic; information theory; Shannon entropy; probability; 11.25.Hf; 123.1K (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0129183107011753

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