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CASPT2 study on low-lying states of HBN and HNB radicals by Wen-Zuo Li; Jian-Bo Cheng; Qing-Zhong Li; Bao-An Gong; Jia-Zhong Sun is a Physics and Astronomy article available to read on EtoBox.

What is CASPT2 study on low-lying states of HBN and HNB radicals about?

## Abstract In this study, some low‐lying states of the HBN and HNB radicals have been studied using multiconfiguration second‐order perturbation theory. The geometries of all stationary points along the potential energy surfaces (PESs) were optimized at the CASPT2/cc‐pVQZ level. The ground and the first excited states of HBN were predicted to be __X__^2^Π and __A__^2^Σ^+^ states, respectively. It was predicted that the ground state of HNB is __X__^2^Σ^+^ state. The __A__^2^Π state of HNB has unique imaginary frequency, which was different from the previously published results. A bending local minimum M1 was found for the first time along the 1^2^__A__′′ PES, and the __A__^2^Π state of HNB should be the transition state of the isomerization reactions for M1 ↔ M1. The CASPT2/ANO potential energy curves (PECs) of isomerization reactions for HBN ↔ HNB were calculated as a function of HBN bond angle. By comparing the CASPT2 and CASSCF calculated results, we concluded that the influence of the dynamic electron correlation on HBN ↔ HNB system is not large. © 2009 Wiley Periodicals, Inc. Int J Quantum Chem, 2011

Who reads CASPT2 study on low-lying states of HBN and HNB radicals?

Author

Wen-Zuo Li; Jian-Bo Cheng; Qing-Zhong Li; Bao-An Gong; Jia-Zhong Sun

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0020-7608)

Published

2010

Language

EN

Field

Physics and Astronomy (Physical Sciences)