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Structural analysis of Pt(1 1 1)c(√3 × 5)rect.–CO using photoelectron diffraction
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Nisbet, G., Lamont, C. L. A., Polcik, M., Terborg, R., Sayago, D. I., Hoeft, J. T., Kittel, M., Toomes, R. L. and Woodruff, D. P. (2007) Structural analysis of Pt(1 1 1)c(√3 × 5)rect.–CO using photoelectron diffraction. Surface Science, Vol.601 (No.5). pp. 1296-1303. doi:10.1016/j.susc.2006.12.073
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Official URL: http://dx.doi.org/10.1016/j.susc.2006.12.073
Abstract
Core level shift scanned-energy mode photoelectron diffraction using the two distinct components of the C 1s emission has been used to determine the structure of the Pt(1 1 1)c(√3 × 5)rect.–CO phase formed by 0.6 ML of adsorbed CO. The results confirm earlier assignments of these components to CO in atop and bridging sites, further confirm that the best structural model involves a 2:1 occupation ratio of these two sites, and provides quantitative structural parameter values. In particular the Pt–C chemisorption bondlengths for the atop and bridging sites are, respectively, 1.86 ± 0.02 Å and 2.02 ± 0.04 Å. These values are closely similar to those found in the 0.5 ML coverage c(4 × 2) phase, involving an atop:bridge occupation ratio of 1:1, obtained in earlier quantitative low energy electron diffraction studies. The results also indicate a clear tilt of the molecular axis of atop CO species in this compression phase, consistent with the finding of an earlier electron-stimulated desorption ion angular distribution investigation
| 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, Carbon monoxide -- Research, Platinum compounds -- Research | ||||
| Journal or Publication Title: | Surface Science | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 0039-6028 | ||||
| Official Date: | 1 March 2007 | ||||
| Dates: |
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| Volume: | Vol.601 | ||||
| Number: | No.5 | ||||
| Page Range: | pp. 1296-1303 | ||||
| DOI: | 10.1016/j.susc.2006.12.073 | ||||
| Status: | Peer Reviewed | ||||
| Access rights to Published version: | Open Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
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