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Theoretical re-investigation on the N–N bond breaking of N2O+ cations in the A2Σ+ and B2Π states at the CASPT2 level.
- Source :
-
Chemical Physics Letters . Nov2023, Vol. 831, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] • 2D PESs along N–NO bond length and N–N–O bond angle of N 2 O+ in the A2Σ+ and B2Π states are calculated at the CASPT2 level. • Validated a novel adiabatic decomposition path of the A2Aʹ(A2Σ+) state in bent geometry to rotationally excited NO+(X1Σ+) and N(2D). • The respective contributions of the Aʹ and A ″ components split from the B2Π state are clarified separately. Two-dimensional multistate potential energy surfaces along N–NO bond length and N–N–O bond angle of N 2 O+ in the A2Σ+ and B2Π states were calculated at the CASPT2/cc-pVQZ level. In comparison to the known decomposition mechanisms in linear structure, a new N–NO bond fission pathway was proposed in bent geometry for the A2Aʹ(A2Σ+) state with a lower barrier, leading to rotationally excited NO+(X1Σ+) and N(2D) fragments. Likewise, the respective contributions of the Aʹ and A ″ components split from the B2Π state were clarified. Considering avoided crossing and the coupling of spin states, ro-vibrational distributions of the NO+ fragment ion observed in experiments are elucidated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00092614
- Volume :
- 831
- Database :
- Academic Search Index
- Journal :
- Chemical Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 173341503
- Full Text :
- https://doi.org/10.1016/j.cplett.2023.140857