Kinetic and mechanistic study of the reaction between methane sulfonamide (CH3S(O)2NH2) and OH

Berasategui, Matias; Amedro, Damien; Edtbauer, Achim; Williams, Jonathan; Lelieveld, Jos; Crowley, John N.

doi:https://doi.org/10.5194/acp-20-2695-2020

Articles | Volume 20, issue 5

https://doi.org/10.5194/acp-20-2695-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-2695-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 5

Research article

|

04 Mar 2020

Research article |

| 04 Mar 2020

Kinetic and mechanistic study of the reaction between methane sulfonamide (CH₃S(O)₂NH₂) and OH

Matias Berasategui, Damien Amedro, Achim Edtbauer, Jonathan Williams, Jos Lelieveld, and John N. Crowley

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Final revised paper (published on 04 Mar 2020)
Supplement to the final revised paper
Preprint (discussion started on 28 Nov 2019)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Reviewer Comments', Anonymous Referee #1, 13 Dec 2019
- AC1: 'Reply to RC1', John N. Crowley, 24 Jan 2020
RC2: 'Anonymous Review', Anonymous Referee #2, 18 Dec 2019
- AC2: 'Reply to RC2', John N. Crowley, 24 Jan 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by John N. Crowley on behalf of the Authors (30 Jan 2020) Author's response Manuscript

ED: Publish as is (03 Feb 2020) by James B. Burkholder

AR by John N. Crowley on behalf of the Authors (04 Feb 2020) Manuscript

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Short summary

We have determined the rate coefficient and mechanism for the reaction of the OH radical with methane sulphonamide, a trace gas which has recently been found in the atmosphere. The rate coefficient is 1.4 × 10⁻¹³ cm³ molec.⁻¹ s⁻¹, which indicates a tropospheric lifetime of > 2 months. The observation of CO, CO₂, SO₂, HNO₃, HCOOH, and N₂O products enabled us to derive a detailed reaction mechanism for the reaction, which proceeds predominantly by H abstraction from the CH₃ group.