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A structural study of a C3H3 species coadsorbed with CO on Pd(111)

Knight, M. J., Allegretti, F., Kröger, E. A., Polcik, M., Lamont, C.L.A. and Woodruff, D.P. (2008) A structural study of a C3H3 species coadsorbed with CO on Pd(111). Surface Science, 602 (16). pp. 2743-2751. ISSN 00396028

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The combination of chemical-state-specific C 1s scanned-energy mode photoelectron diffraction (PhD) and O K-edge near-edge X-ray absorption fine structure (NEXAFS) has been used to determine the local adsorption geometry of the coadsorbed C3H3 and CO species formed on Pd(1 1 1) by dissociation of molecular furan. CO is found to adopt the same geometry as in the Pd(1 1 1)c(4 × 2)-CO phase, occupying the two inequivalent three-fold coordinated hollow sites with the C–O axis perpendicular to the surface. C3H3 is found to lie with its molecular plane almost parallel to the surface, most probably with the two ‘outer’ C atoms in equivalent off-atop sites, although the PhD analysis formally fails to distinguish between two distinct local adsorption sites.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
School of Applied Sciences > Materials and Catalysis Research Centre
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Depositing User: Graham Stone
Date Deposited: 12 Feb 2009 13:53
Last Modified: 28 Aug 2021 10:44


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