An X-ray-Absorption Study Of Gold Coordination-Compounds - EXAFS Refinements And Double-Electron Excitation Background

Benfield, R.E. and Filipponi, A. and Bowron, D.T. and Newport, R.J. and Gurman, S.J. (1994) An X-ray-Absorption Study Of Gold Coordination-Compounds - EXAFS Refinements And Double-Electron Excitation Background. Journal of Physics-Condensed Matter, 6 (41). pp. 8429-8448. ISSN 0953-8984. (Full text available)

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http://dx.doi.org/10.1088/0953-8984/6/41/007

Abstract

X-ray absorption spectra at the Au L edges of Au(PPh3)Cl, Au(PPh3)2Cl and KAuCl4.2H2O have been collected as a function of temperature. Data analysis of the extended x-ray absorption fine structure was carried out with the GNXAS package performing an appropriate treatment of the multiple-scattering effects involving several ligand atoms. The accuracy of the current analysis procedures for the Au L edges is assessed and the sensitivity to coordination numbers and distances is established. Evidence for the presence of a [2p4f] double-electron excitation in the atomic Au background is obtained for the first time. The results presented in this paper are of general importance for improving data analysis at the Au L edges and in particular for improving the EXAFS results in Au cluster compounds.

Item Type: Article
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: J.M. Smith
Date Deposited: 14 May 2009 15:47
Last Modified: 02 Dec 2011 11:42
Resource URI: http://kar.kent.ac.uk/id/eprint/15864 (The current URI for this page, for reference purposes)
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