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Photoreactions of the CH-SO Complex in a Low-Temperature Matrix Investigated by Infrared Spectroscopy and Density Functional Theory Calculations. | LitMetric

Photoreactions of the CH-SO Complex in a Low-Temperature Matrix Investigated by Infrared Spectroscopy and Density Functional Theory Calculations.

Molecules

Department of Natural Sciences, School of Engineering, Tokyo Denki University, 5 Senju-Asahi-cho, Adachi-ku 120-8551, Tokyo, Japan.

Published: November 2024

AI Article Synopsis

Article Abstract

Ethylene and sulfur dioxide molecules were co-deposited on a CsI window at cryogenic temperature, and the photoproducts upon UV irradiation were observed using Fourier transform infrared (FTIR) spectroscopy. The products were found to be UV wavelength-dependent; at shorter wavelengths (λ = 266 nm) one strong peak was observed while more than three peaks were identified at longer UV wavelengths (λ = 300 nm). Spectral features changed seamlessly along with UV wavelength. Density functional theory (DFT) calculations were carried out for potential products, and spectral matches between observations and calculations seemed satisfactory, assuming a cyclic molecule (oxathietane 2-oxide) as the main photoproduct at longer UV wavelengths. On the other hand, the spectra of photoproducts at shorter UV wavelengths were reproduced by assuming the decomposition products of an intermediate, from the supplementary experiments using deuterated samples. Plausible photoreaction schemes were presented to account for the observed photoproducts.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596873PMC
http://dx.doi.org/10.3390/molecules29225362DOI Listing

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