Article
Electronic structure of carbon trioxide and vibronic interactions involving Jahn-Teller states.
Journal of Physical Chemistry A
(2007)
Abstract
The electronic structure of CO3 is characterized by equation-of-motion and coupled-cluster methods. C2v and D3h isomers are considered. Vertical excitation energies, transition dipoles, and the molecular orbital character of the excited states are presented for singlet and triplet manifolds. Ground-state equilibrium structures and frequencies are strongly affected by vibronic interactions with low-lying excited states. At D3h geometries, the vibronic interactions are enhanced by the Jahn−Teller character of the excited states. The curvature of the potential energy surface and the existence of the D3h minimum are very sensitive to the correlation treatment and the basis set. The correlation effects are stronger at D3h, in agreement with a smaller HOMO−LUMO gap.
Keywords
- Carbon Trioxide,
- Jahn-Teller states
Disciplines
Publication Date
August 1, 2007
DOI
10.1021/jp073627d
Citation Information
Timothy Kowalczyk, Anna I Krylov (2007) Electronic structure of carbon trioxide and vibronic interactions involving Jahn-Teller states. J. Phys. Chem. A 111 (33), 8271-8276.