Understanding chemistry with thesymmetry‐decomposed Voronoideformation density charge analysis

Author:

Nieuwland Celine1ORCID,Vermeeren Pascal1ORCID,Bickelhaupt F. Matthias123ORCID,Fonseca Guerra Célia1ORCID

Affiliation:

1. Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute of Molecular and Life Sciences (AIMMS) Vrije Universiteit Amsterdam Amsterdam The Netherlands

2. Institute of Molecules and Materials Radboud University Nijmegen Nijmegen The Netherlands

3. Department of Chemical Sciences University of Johannesburg Johannesburg South Africa

Abstract

AbstractThe symmetry‐decomposed Voronoi deformation density (VDD) charge analysis is an insightful and robust computational tool to aid the understanding of chemical bonding throughout all fields of chemistry. This method quantifies the atomic charge flow associated with chemical‐bond formation and enables decomposition of this charge flow into contributions of (1) orbital interaction types, that is, Pauli repulsive or bonding orbital interactions; (2) per irreducible representation (irrep) of any point‐group symmetry of interacting closed‐shell molecular fragments; and now also (3) interacting open‐shell (i.e., radical) molecular fragments. The symmetry‐decomposed VDD charge analysis augments the symmetry‐decomposed energy decomposition analysis (EDA) so that the charge flow associated with Pauli repulsion and orbital interactions can be quantified both per atom and per irrep, for example, for σ, π, and δ electrons. This provides detailed insights into fundamental aspects of chemical bonding that are not accessible from EDA.

Funder

Nederlandse Organisatie voor Wetenschappelijk Onderzoek

Publisher

Wiley

Subject

Computational Mathematics,General Chemistry

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