Volume 251, 2024

Abortive reaction leads to selective adsorbate rotation

Abstract

Electron-induced dissociation of a fluorocarbon adsorbate CF3 (ad) at 4.6 K is shown by Scanning Tunnelling Microscopy (STM) to form directed energetic F-atom ‘projectiles’ on Cu(110). The outcome of a collision between these directed projectiles and stationary co-adsorbed allyl ‘target’ molecules was found through STM to give rotational excitation of the target allyl, clockwise or anti-clockwise, depending on the chosen collision geometry. Molecular dynamics computation linked the collisional excitation of the allyl target to an ‘abortive chemical reaction’, in which the approach of the F-projectile stretched an H–C bond lifting the allyl above the surface, facilitating isomerization from ‘Across’ to ‘Along’ a Cu row.

Graphical abstract: Abortive reaction leads to selective adsorbate rotation

Associated articles

Article information

Article type
Paper
Submitted
11 Dec 2023
Accepted
22 Jan 2024
First published
25 Jan 2024

Faraday Discuss., 2024,251, 448-456

Abortive reaction leads to selective adsorbate rotation

Y. Lai, L. Leung, M. J. Timm, G. C. Walker and J. C. Polanyi, Faraday Discuss., 2024, 251, 448 DOI: 10.1039/D3FD00167A

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