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The local adsorption geometry of benzenethiolate on Cu(1 0 0)
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Allegretti, F., Bussolotti, F., Woodruff, D. P., Dhanak, Vin, Beccari, M., Di Castro, M., Betti, M. G. and Mariani, C. (2008) The local adsorption geometry of benzenethiolate on Cu(1 0 0). Surface Science, Vol.602 (No.14). pp. 2453-2462. doi:10.1016/j.susc.2008.05.032
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Official URL: http://dx.doi.org/10.1016/j.susc.2008.05.032
Abstract
The local adsorption geometry of benzenethiolate in the ordered c(2 × 6) phase on Cu(1 0 0) has been investigated by a combination of S K-edge near-edge X-ray absorption fine structure (NEXAFS), normal incidence X-ray standing waves (NIXSW) and S 1s scanned-energy mode photoelectron diffraction (PhD). NEXAFS and PhD show that the molecular plane is tilted from the surface normal by 20 ± 15°, while NIXSW clearly identifies the S head-group as occupying the four-fold coordinated hollow sites. PhD shows the S atoms lies 1.34 ± 0.04 Å above the outermost Cu atomic layer, leading to a Cu–S bondlength of 2.25 ± 0.02 Å. The combination of the PhD and NIXSW results shows the Cu surface layer has an outward relaxation of 0.15 ± 0.06 Å. Possible origins for this large adsorbate-induced relaxation are discussed.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Surfaces (Physics) -- Research, Photoelectron spectroscopy, X-rays -- Diffraction, X-ray absorption near edge structure, Chemisorption -- Research | ||||
| Journal or Publication Title: | Surface Science | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 0039-6028 | ||||
| Official Date: | July 2008 | ||||
| Dates: |
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| Volume: | Vol.602 | ||||
| Number: | No.14 | ||||
| Page Range: | pp. 2453-2462 | ||||
| DOI: | 10.1016/j.susc.2008.05.032 | ||||
| Status: | Peer Reviewed | ||||
| Access rights to Published version: | Open Access | ||||
| Funder: | Council for the Central Laboratory of the Research Councils (Great Britain) (CCLRC) |
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