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Structure determination of ammonia on Cu(111)
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UNSPECIFIED (2000) Structure determination of ammonia on Cu(111). JOURNAL OF PHYSICAL CHEMISTRY B, 104 (14). pp. 3044-3049. ISSN 1089-5647.
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Abstract
The local structure of ammonia adsorbed on Cu(lll) has been determined using N Is scanned-energy-mode photoelectron diffraction. The molecule is found to occupy an atop bonding site with a Cu-N bond length of 2.09 +/- 0.03 Angstrom, but with large amplitude vibrations of the molecule parallel to the surface, consistent with a systematic trend found in our studies of species adsorbed in atop sites. We find no evidence for a significant static offset of the molecule from the atop site (which was found on the lower-symmetry Cu(110) surface), but a small offset of this kind cannot be distinguished from the effects of the large dynamic displacement. As a first test for this photoelectron diffraction technique we have also investigated the effect of including the weakly scattering H atoms in the analysis. This does lead to preferred sites for the H atoms consistent with expectations, but their precision of location is too poor to provide information of chemical significance.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF PHYSICAL CHEMISTRY B | ||||
Publisher: | AMER CHEMICAL SOC | ||||
ISSN: | 1089-5647 | ||||
Official Date: | 13 April 2000 | ||||
Dates: |
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Volume: | 104 | ||||
Number: | 14 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 3044-3049 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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