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STRUCTURAL STUDY OF 1,2-DICHLOROETHANE ON CU(111) USING X-RAY ABSORPTION AND STANDING WAVES
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UNSPECIFIED (1992) STRUCTURAL STUDY OF 1,2-DICHLOROETHANE ON CU(111) USING X-RAY ABSORPTION AND STANDING WAVES. Surface Science, 268 (1-3). pp. 36-44. ISSN 0039-6028.
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Abstract
The structure of 1,2-dichloroethane (DCE) adsorbed on Cu(111) in a single monolayer form has been investigated using Cl K-edge near-edge X-ray absorption and normal-incidence standing X-ray wavefield absorption at the (111) reflection. These measurements indicate a small tilt (25-degrees) of the Cl-C axis from parallel to the surface, and two different equally occupied Cl-Cu layer spacings relative to the extended lattice planes of 1.0 and 1.6 angstrom. These results are found to be best reconciled with a structural model in which the DCE bonds with the Cl-C-C-Cl plane of the trans conformer perpendicular to the surface and the Cl atoms over atop adsorption sites, the Cu-Cl bondlength being compatible with the van der Waals radius for Cl. The possible role of a frustrated rotational mode of the adsorbed molecule leading to a "flipping" between two equivalent states is considered.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | Surface Science | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0039-6028 | ||||
Official Date: | 1 May 1992 | ||||
Dates: |
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Volume: | 268 | ||||
Number: | 1-3 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 36-44 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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