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Energy Near-Degeneracy Driven Covalency Analyzed by a Two-Electron Two-Orbital Model

Year:    2025

Author:    Michael Dolg

Communications in Computational Chemistry, Vol. 7 (2025), Iss. 2 : pp. 161–170

Abstract

A simple model based on the two-electron two-orbital textbook problem is presented and used to analyze pairwise interatomic interactions in metal-ligand bonding. In particular the two types of covalency discussed during the last decade for actinide-ligand interactions, overlap/interaction driven and energy-near-degeneracy driven covalency, as well as their influence on the bond strengths and interatomic charge build-up are discussed. The hydration complexes ${\rm M}({\rm H}_2{\rm O})^{4+}_n$ of selected tetravalent lanthanide and actinide ions are used to probe the performance of the model for an analysis of calculations as well as for predictions.

Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicc.2025.99.01

Communications in Computational Chemistry, Vol. 7 (2025), Iss. 2 : pp. 161–170

Published online:    2025-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    10

Keywords:    bonding covalency actinides lanthanides.

Author Details

Michael Dolg