Vibrational and Valence Photoelectron Spectroscopies, Matrix Photochemistry, and Conformational Studies of ClC(O)SSCl

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• 作者：Yeny A. Tobo虂n ; Melina V. Cozzari虂n ; Wei-Gang Wang ; Mao-Fa Ge ; Carlos O. Della Ve虂dova ; Rosana M. Romano
• 刊名：Journal of Physical Chemistry A
• 出版年：2011
• 出版时间：September 15, 2011
• 年：2011
• 卷：115
• 期：36
• 页码：10203-10210
• 全文大小：966K
• 年卷期：v.115,no.36(September 15, 2011)
• ISSN：1520-5215

文摘

ClC(O)SSCl was prepared by an improved method by the reaction of [(CH₃)₂CHOC(S)]₂S with SO₂Cl₂ in hexane. The photoelectron spectra in the gas phase present four distinct regions, corresponding to ionizations from electrons formally located at the S, O, and Cl atoms and at the C鈺怬 bond. The vibrational IR and Raman spectra of the liquid were interpreted in terms of the most stable syn鈥揼auche conformer (the O鈺怌 double bond syn with respect to the S鈥擲 single bond and the C鈥擲 single bond gauche with respect to the S鈥擟l single bond) in equilibrium with the less stable anti鈥揼auche form, both occurring in two enantiomeric forms. The randomization process between the conformers was induced by broad-band UV鈥搗isible irradiation in matrix conditions, and several photoproducts were identified by FTIR spectroscopy. The experimental results were complemented by theoretical calculations.