Topology of the electron density in open-shell systems
Rosana M Lobayan1, Diego R Alcoba, Roberto C Bochicchio
1Facultad de Ingeniería, Universidad de la Cuenca del Plata, Lavalle 50, 3400, Corrientes, Argentina.
The Journal of Physical Chemistry. A
|December 8, 2009
Summary
This study analyzes electron density in open-shell molecules, revealing charge distribution patterns. It assesses the Lewis bonding model
Area of Science:
- Quantum Chemistry
- Computational Chemistry
Background:
- Open-shell molecular systems present unique challenges in electronic structure analysis.
- Understanding electron density distribution is crucial for chemical bonding theories.
Purpose of the Study:
- To decompose the electron density field of open-shell systems into meaningful components.
- To topologically analyze novel features introduced by open-shell wave functions.
- To evaluate the reliability of the Lewis bonding model for these systems.
Main Methods:
- Decomposition of electron density fields.
- Topological analysis of charge concentration and depletion regions.
- Application of the single-double configuration interaction (SDCI) wave function approach.
Main Results:
- Identification of localized and non-localized charge concentration/depletion regions.
- Demonstration of how open-shell characteristics influence electron density topology.
- Assessment of the Lewis model's applicability to open-shell bonding.
Conclusions:
- The study provides a detailed analysis of electron density in open-shell systems.
- Findings offer insights into the limitations and applicability of the Lewis model in describing chemical bonding.
- The methodology allows for a deeper understanding of electronic structure in open-shell molecular systems.
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