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Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface

In Surface-Aligned-Reactions (SAR), the degrees of freedom of chemical reactions are restricted and therefore the reaction outcome is selected. Using the inherent corrugation of a Cu(110) substrate the adsorbate molecules can be positioned and aligned and the impact parameter, the collision miss-dis...

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Autores principales: Timm, Matthew J., Leung, Lydie, Anggara, Kelvin, Polanyi, John C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814886/
https://www.ncbi.nlm.nih.gov/pubmed/36697691
http://dx.doi.org/10.1038/s42004-021-00453-x
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author Timm, Matthew J.
Leung, Lydie
Anggara, Kelvin
Polanyi, John C.
author_facet Timm, Matthew J.
Leung, Lydie
Anggara, Kelvin
Polanyi, John C.
author_sort Timm, Matthew J.
collection PubMed
description In Surface-Aligned-Reactions (SAR), the degrees of freedom of chemical reactions are restricted and therefore the reaction outcome is selected. Using the inherent corrugation of a Cu(110) substrate the adsorbate molecules can be positioned and aligned and the impact parameter, the collision miss-distance, can be chosen. Here, substitution reaction for a zero impact parameter collision gives an outcome which resembles the classic Newton’s cradle in which an incident mass ‘knocks-on’ the same mass in the collision partner, here F + CF(3) → (CF(3))′ + (F)′ at a copper surface. The mechanism of knock-on was shown by Scanning Tunnelling Microscopy to involve reversal of the CF(3) umbrella as in Walden inversion, with ejection of (F)′ product along the continuation of the F-reagent direction of motion, in collinear reaction.
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spelling pubmed-98148862023-01-10 Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface Timm, Matthew J. Leung, Lydie Anggara, Kelvin Polanyi, John C. Commun Chem Article In Surface-Aligned-Reactions (SAR), the degrees of freedom of chemical reactions are restricted and therefore the reaction outcome is selected. Using the inherent corrugation of a Cu(110) substrate the adsorbate molecules can be positioned and aligned and the impact parameter, the collision miss-distance, can be chosen. Here, substitution reaction for a zero impact parameter collision gives an outcome which resembles the classic Newton’s cradle in which an incident mass ‘knocks-on’ the same mass in the collision partner, here F + CF(3) → (CF(3))′ + (F)′ at a copper surface. The mechanism of knock-on was shown by Scanning Tunnelling Microscopy to involve reversal of the CF(3) umbrella as in Walden inversion, with ejection of (F)′ product along the continuation of the F-reagent direction of motion, in collinear reaction. Nature Publishing Group UK 2021-02-12 /pmc/articles/PMC9814886/ /pubmed/36697691 http://dx.doi.org/10.1038/s42004-021-00453-x Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Timm, Matthew J.
Leung, Lydie
Anggara, Kelvin
Polanyi, John C.
Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
title Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
title_full Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
title_fullStr Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
title_full_unstemmed Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
title_short Direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
title_sort direct observation of knock-on reaction with umbrella inversion arising from zero-impact-parameter collision at a surface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814886/
https://www.ncbi.nlm.nih.gov/pubmed/36697691
http://dx.doi.org/10.1038/s42004-021-00453-x
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