Gas-phase and matrix-isolation photochemistry of methyl thioglycolate, CH^sub 3^OC(O)CH^sub 2^SH: Influence of the presence of molecular oxygen in the photochemical mechanisms

The photochemistry of methyl thioglycolate (MTG), CH3OC(O)CH2SH, in gas phase and in matrix isolation conditions was studied by means of FTIR spectroscopy, and the influence of the presence of molecular oxygen on the photochemical mechanisms was investigated. The UV-vis broad-band photolysis of MTG...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2017-07, Vol.344, p.101
Main Authors: Bava, Yanina B, Tamone, Luciana M, Juncal, Luciana C, Seng, Samantha, Tobón, Yeny A, Sobanska, Sophie, Picone, A Lorena, Romano, Rosana M
Format: Article
Language:English
Subjects:
Carbon dioxide
Chemical compounds
Fourier transforms
Infrared spectroscopy
Methane
Oxygen
Photochemistry
Photolysis
Spectrum analysis
Sulfur dioxide
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Summary:The photochemistry of methyl thioglycolate (MTG), CH3OC(O)CH2SH, in gas phase and in matrix isolation conditions was studied by means of FTIR spectroscopy, and the influence of the presence of molecular oxygen on the photochemical mechanisms was investigated. The UV-vis broad-band photolysis of MTG in gas phase originates CH3OC(O)CH3 and S8, while in matrix conditions the photoproducts are CH3OH, H2CS, and CO, interacting inside the matrix cage. The photolysis of MTG in the presence of O2 conducts to the formation of SO2, independent of the experimental conditions, being CH3OH, HC(O)OH, and CO the other photoproducts for the gas-phase photolysis, and H2CO, CH4, and CO2 for the experiments performed in Ar matrix conditions.
ISSN:1010-6030
1873-2666