高等学校化学学报2026，Vol.47Issue(9)：166-174,9.DOI:10.7503/cjcu20260116
(SO2)2在SO2单体反对称伸缩振动区域的振转光谱
Rovibrational Spectrum of(SO2)2 Complex in the Asymmetric Stretching Region of SO2
摘要
Abstract
High-resolution rovibrational spectra of(SO2)2 in the ν3 asymmetric stretching region of SO2 were measured using a mid-infrared continuously tunable external cavity quantum cascade laser combined with pulsed supersonic jet infrared absorption spectroscopy.A total of 490 infrared transitions were identified,including 395 transitions in the electron-doner(ED)band(J≤29,Ka≤11)and 95 transitions in the electron-acceptor(EA)band(J≤21,Ka≤8).By integrating previously reported microwave spectral data,spectral data of SO2 monomer in the v1 excited state,and the newly measured spectral data in this work,global fitting was performed based on the asymmetric top Hamiltonian,yielding accurate ground and excited state spectroscopic parameters including rotational constants and centrifugal distortion constants.The band origins of the ED and EA bands of(SO2)2 are 1355.77424(14)and 1356.34969(27)cm-1,respectively,exhibiting red shifts of 6.29 and 5.71 cm-1 compared to the band origin of the v3 band of SO2 monomer.关键词
振转光谱/二氧化硫二聚体/超声分子束/振动频移Key words
Rovibrational spectrum/Sulfur dioxide dimer/Supersonic jet/Vibrational frequency shift分类
化学化工引用本文复制引用
李响,彭康宁,刘壮,罗威,卢燕,郑锐..(SO2)2在SO2单体反对称伸缩振动区域的振转光谱[J].高等学校化学学报,2026,47(9):166-174,9.基金项目
国家自然科学基金(批准号:12464038,12564035)、江西省自然科学基金(批准号:20242BAB20031,20252BAC240159)、河南省科技攻关项目(批准号:252102211100)、江西省教育厅科技项目(批准号:GJJ2401902)和南昌师范学院博士科研启动基金(批准号:NSBSJJ2023010)资助.Supported by the National Natural Science Foundation of China(Nos.12464038,12564035),the Natural Science Foundation of Jiangxi Province,China(Nos.20242BAB20031,20252BAC240159),the Science and Technology Research Project of Henan Province,China(No.252102211100),the Science and Technology Research Project of Jiangxi Provincial Department of Education,China(No.GJJ2401902)and the Doctoral Research Initiation Foundation of Nanchang Normal University,China(No.NSBSJJ2023010). （批准号:12464038,12564035）
