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A New Method to Describe the Multimode Jahn–Teller Effect Using Density Functional Theory

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2009
Authors
Zlatar, Matija
Schläpfer, Carl-Wilhelm
Daul, Claude
Book part (Published version)
,
Springer-Verlag Berlin Heidelberg 2009
Metadata
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Abstract
A new method for the analysis of the adiabatic potential energy surfacesof Jahn–Teller (JT) active molecules is presented. It is based on the analogy betweenthe JT distortion and reaction coordinates. Within the harmonic approximation theJT distortion can be analysed as the linear combination of all totally symmetricnormal modes in the low symmetry minimum energy conformation. Contributionof the normal modes to the distortion, their energy contribution to the JT stabilisationenergy, the forces at high symmetry cusp and detailed distortion path canbe estimated quantitatively. This approach gives direct insight into the coupling ofelectronic structure and nuclear displacements. Further more, it is reviewed howmultideterminental DFT can be applied for the calculation of the JT parameters. Asexamples the results for VCl4, cyclopentadienyl radical and cobaltocene are given.
Keywords:
Jahn-Teller effect / Potential Energy Surface / Vibronic Coupling / Normal Modes / Density Functional Theory / DFT calculations / Degenerate electronic states / Reaction coordinate / Conical intersections
Source:
The Jahn-Teller Effect Fundamentals and Implications for Physics and Chemistry - Springer Series in Chemical Physics, 2009, 97, 131-165
Publisher:
  • Springer, Berlin, Heidelberg
Projects:
  • Hemijske i biohemijske konsekvence metal-ligand interakcija, II. deo (RS-142017)
  • Swiss National Science Foundation
Note:
  • The peer-reviewed version: http://cer.ihtm.bg.ac.rs/handle/123456789/2665

DOI: 10.1007/978-3-642-03432-9_6

ISBN: 978-3-642-03431-2

ISSN: 0172-6218

WoS: 000292113400006

Scopus: 2-s2.0-78149488770
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3092
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