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Structure determination of ammonia on Cu(110) - a low-symmetry adsorption site

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UNSPECIFIED (1997) Structure determination of ammonia on Cu(110) - a low-symmetry adsorption site. Surface Science, 387 (1-3). pp. 152-159.

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Abstract

The local adsorption structure of ammonia on Cu(110) has been determined in a quantitative fashion using N 1 s scanned-energy mode photoelectron diffraction. While inversion of the photoelectron diffraction spectra using a direct method indicates that the adsorbed NH, molecules are near to atop sites, a fuller multiple scattering analysis shows that the molecule is actually displaced 0.37 Angstrom off the atop site in a [100] azimuth. The result is ascribed to adsorbate-adsorbate interactions (steric hindrance) similar to those found in (2 x 1)-CO (pmg) structures seen on several fee (110) surfaces, although in the case of ammonia, it occurs at coverages well below saturation, implying that adsorbate-adsorbate attraction also occurs. These general conclusions are entirely consistent with those of a recent ESDIAD study of this system. (C) 1997 Elsevier Science B.V.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Journal or Publication Title: Surface Science
Publisher: ELSEVIER SCIENCE BV
ISSN: 0039-6028
Official Date: 8 October 1997
Dates:
DateEvent
8 October 1997UNSPECIFIED
Volume: 387
Number: 1-3
Number of Pages: 8
Page Range: pp. 152-159
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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