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Issue 14, 2018
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Capture of SO3 isomers in the oxidation of sulfur monoxide with molecular oxygen

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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.

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

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Article information


Submitted
07 Dec 2017
Accepted
14 Dec 2017
First published
14 Dec 2017

Chem. Commun., 2018,54, 1690-1693
Article type
Communication

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

Z. Wu, B. Lu, R. Feng, J. Xu, Y. Lu, H. Wan, A. K. Eckhardt, P. R. Schreiner, C. Xie, H. Guo and X. Zeng, Chem. Commun., 2018, 54, 1690
DOI: 10.1039/C7CC09389F

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