Ji Ting, Zhu Bixue, Zhao Jie, Yu Wenjie, Wang Xuefeng
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
J Phys Chem A. 2021 May 6;125(17):3606-3613. doi: 10.1021/acs.jpca.1c01345. Epub 2021 Apr 23.
Matrix isolation infrared spectroscopy has been employed to study the reaction of laser-ablated boron atoms with hydrogen selenide in a 5 K solid argon matrix. On the basis of the isotopic shifts as well as the theoretical frequency calculations, triatomic molecule BSe and its anion BSe were identified. Both BSe and BSe were predicted to have symmetric structures with nearly identical structure parameters and bond strengths by quantum chemical calculations. Whereas the observed antisymmetric B-Se stretching frequency of BSe is much lower than that of BSe, the anomalously low antisymmetric B-Se stretching frequency of BSe is attributed to a pseudo-Jahn-Teller effect due to the mixing of the XΠ ground state with the AΠ excited state. In addition, HBSe, HBSe, and HSeBSe molecules were produced in the reaction.
