University of Oulu

Berndt, T., Chen, J., Møller, K. H., Hyttinen, N., Prisle, N. L., Tilgner, A., Hoffmann, E. H., Herrmann, H., & Kjaergaard, H. G. (2020). SO2 formation and peroxy radical isomerization in the atmospheric reaction of OH radicals with dimethyl disulfide. Chemical Communications, 56(88), 13634–13637.

SO₂ formation and peroxy radical isomerization in the atmospheric reaction of OH radicals with dimethyl disulfide

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Author: Berndt, Torsten1; Chen, Jing2; Møller, Kristian H.2;
Organizations: 1Atmospheric Chemistry Department (ACD), Leibniz Institute for Tropospheric Research (TROPOS), Permoserstraße. 15, 04318 Leipzig, Germany
2Department of Chemistry, University of Copenhagen, Universitetsparken 5, Denmark
3Nano and Molecular Systems Research Unit, University of Oulu, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.2 MB)
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Language: English
Published: Royal Society of Chemistry, 2020
Publish Date: 2021-10-08


The atmospheric reaction of OH radicals with dimethyl disulfide, CH₃SSCH₃, proceeds primarily via OH addition forming CH₃S and CH₃SOH as reactive intermediates, and to a lesser extent via H-abstraction resulting in the peroxy radical CH₃SSCH₂OO in the presence of O₂. The latter undergoes a fast two-step isomerization process leading to HOOCH₂SSCHO. CH₃S and CH₃SOH are both converted to SO₂ and CH₃O₂ with near unity yields under atmospheric conditions.

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Series: Chemical communications
ISSN: 1359-7345
ISSN-E: 1364-548X
ISSN-L: 1359-7345
Volume: 56
Issue: 88
Pages: 13634 - 13637
DOI: 10.1039/D0CC05783E
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: We thank A. Rohmer und K. Pielok for technical assistance in the experiments and the Independent Research Fund Denmark, the Alfred P. Sloan Foundation, and the Academy of Finland for financial support. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme, Project SURFACE (Grant Agreement No. 717022).
EU Grant Number: (717022) SURFACE - The unexplored world of aerosol surfaces and their impacts.
Copyright information: © The Royal Society of Chemistry 2020.