Capture of SO3 isomers in the oxidation of sulfur monoxide with molecular oxygen

Chemical Communications : Chem Comm
Zhuang WuXiaoqing Zeng

Abstract

When mixing SO with O2 in N2, Ne, or Ar, an end-on complex OS-OO forms in the gas phase and can subsequently be trapped at cryogenic temperatures (2.8-15.0 K). Upon infrared light irradiation, OS-OO converts to SO3 and SO2 + O with the concomitant formation of a rare 1,2,3-dioxathiirane 2-oxide, i.e., cyclic OS([double bond, length as m-dash]O)O. Unexpectedly, the ring-closure of 16OS-18O18O yields a ca. 2 : 1 mixture of cyclic 18OS([double bond, length as m-dash]16O)18O and 16OS([double bond, length as m-dash]18O)18O. The characterization of OS-OO and OS([double bond, length as m-dash]O)O with IR and UV/Vis spectroscopy is supported by high-level ab initio computations.

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Citations

Nov 14, 2018·Physical Chemistry Chemical Physics : PCCP·Jonathon P MisiewiczHenry F Schaefer
Sep 7, 2020·The Journal of Chemical Physics·Lina WangXiaoqing Zeng
Dec 12, 2018·Chemical Communications : Chem Comm·Xianxu ChuXiaoqing Zeng
Aug 2, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sergei V MakarovAnna S Makarova
Mar 14, 2018·Chemical Communications : Chem Comm·Zhuang WuXiaoqing Zeng
Jan 16, 2020·Journal of the American Chemical Society·Changyun ChenXiaoqing Zeng
Jul 11, 2018·Journal of the American Chemical Society·Jian XuXiaoqing Zeng

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