Absorption and resonance emission spectra of SO2((X)over-tilde1A1/(C)over-tilde1B2) calculated from ab initio potential energy and transition dipole moment surfaces

被引:27
|
作者
Xie, DQ
Guo, H [1 ]
Bludsky, O
Nachtigall, P
机构
[1] Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA
[2] Sichuan Univ, Dept Chem, Chengdu 610064, Sichuan, Peoples R China
[3] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CR-18223 Prague, Czech Republic
[4] Acad Sci Czech Republ, Ctr Complex Mol Syst & Biomol, CR-18223 Prague 8, Czech Republic
基金
美国国家科学基金会; 中国国家自然科学基金;
关键词
D O I
10.1016/S0009-2614(00)01049-6
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report here an analytical fit of the transition dipole moments between (X) over tilde (1)A(1) and (C) over tilde B-1(2) electronic states of SO2 calculated using a high level ab initio method. The absorption spectrum as well as the resonance emission spectra from several low-lying (C) over tilde B-1(2) vibrational levels are calculated using a newly developed ab initio potential energy surface (PES) and the transition dipole functions. The calculated spectra are in semi-quantitative agreement with available experimental data. A strong non-Condon effect is found for the emission spectra. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码:503 / 510
页数:8
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