期刊
JOURNAL OF RAMAN SPECTROSCOPY
卷 44, 期 3, 页码 440-446出版社
WILEY
DOI: 10.1002/jrs.4213
关键词
thioanisole; conical intersectional dynamics; resonance Raman; density functional theory; vibrational assignment
类别
资金
- NNSFC [21033002]
The structural dynamics of thioanisole in the S2(*) electronic state that has large oscillator strength was studied by using the resonance Raman spectroscopy. The vibrational assignments were done for thioanisole on the basis of the FT-Raman and FT-IR measurements, the density-functional theory computations and the normal mode analysis. The A- and B-band resonance Raman spectra were obtained in cyclohexane, methanol and acetonitrile, in which ten modes in A' irreducible representations were observed. The structural dynamics were obtained according to the resonance Raman intensity pattern. The vibroinc-coupling between the S3(sigma*) electronic state that has no oscillator strength and the S2(*) electronic state were revealed. We discuss the correlation between our present structural dynamics and the previous S2(*)/S3(sigma*) conical intersectional dynamics revealed by resonant-enhanced two-photon ionization and the photofragment excitation spectroscopic study. Copyright (c) 2012 John Wiley & Sons, Ltd.
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