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New ab Initio Potential Energy Surfaces for the Renner-Teller Coupled 11A′ and 11A′′ States of CH2
Joint Authors
Zhang, Zhijun
Liu, Xiaojun
Zhang, Chunfang
Bian, Wensheng
Ma, Haitao
Source
Advances in Physical Chemistry
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-12
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
New ab initio potential energy surfaces (PESs) for the two lowest-lying singlet 11A′ and 11A′′ electronic states of CH2, coupled by the Renner-Teller (RT) effect and meant for the spectroscopic study, are presented.
The surfaces are constructed using a dual-level strategy.
The internally contracted multireference configuration interaction calculations with the Davidson correction, using the aug-cc-pVQZ basis set, are employed to obtain 3042 points at the lower level.
The core and core-valence correlation effects are taken into account in the ab initio calculations with a modified optimized aug-cc-pCVQZ basis set for the higher-level points.
The analytical representations of these PESs, with the inclusion of the nonadiabatic RT terms, are obtained by the nonlinear least-squares fit of the calculated points to three-body expansion.
Quantum dynamical calculations are performed on these PESs, and the computed vibronic energy levels for the two singlet electronic states are in excellent agreement with experiment.
American Psychological Association (APA)
Ma, Haitao& Zhang, Chunfang& Zhang, Zhijun& Liu, Xiaojun& Bian, Wensheng. 2012. New ab Initio Potential Energy Surfaces for the Renner-Teller Coupled 11A′ and 11A′′ States of CH2. Advances in Physical Chemistry،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-456186
Modern Language Association (MLA)
Ma, Haitao…[et al.]. New ab Initio Potential Energy Surfaces for the Renner-Teller Coupled 11A′ and 11A′′ States of CH2. Advances in Physical Chemistry No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-456186
American Medical Association (AMA)
Ma, Haitao& Zhang, Chunfang& Zhang, Zhijun& Liu, Xiaojun& Bian, Wensheng. New ab Initio Potential Energy Surfaces for the Renner-Teller Coupled 11A′ and 11A′′ States of CH2. Advances in Physical Chemistry. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-456186
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-456186