| Numéro |
J. Phys. Colloques
Volume 47, Numéro C8, Décembre 1986
EXAFS and Near Edge Structure IV
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|---|---|---|
| Page(s) | C8-509 - C8-515 | |
| DOI | https://doi.org/10.1051/jphyscol:1986895 | |
EXAFS and Near Edge Structure IV
J. Phys. Colloques 47 (1986) C8-509-C8-515
DOI: 10.1051/jphyscol:1986895
1 Department of Pure and Applied Chemistry, University of Strathclyde, GB-Glasgow G1 1XL, Great-Britain
2 Department of I.P.I. Chemistry, Donnan Laboratories, University of Liverpool, GB-Liverpool L69 3BX, Great-Britain
3 Department of I.P.I. Chemistry, Donnan Laboratories, University of Liverpool, GB-Liverpool L69 3BX, Great-Britain
4 SERC Daresbury Laboratory, GB-Warrington WA4 4AD, Great-Britain
J. Phys. Colloques 47 (1986) C8-509-C8-515
DOI: 10.1051/jphyscol:1986895
COVERAGE DEPENDENCE OF ADSORBATE-SUBSTRATE BOND LENGTHS ; CHLORINE AND CAESIUM ADSORBED ON SILVER SINGLE CRYSTALS
G.M. LAMBLE1, D.J . HOLMES2, D.A. KING3 et D. NORMAN41 Department of Pure and Applied Chemistry, University of Strathclyde, GB-Glasgow G1 1XL, Great-Britain
2 Department of I.P.I. Chemistry, Donnan Laboratories, University of Liverpool, GB-Liverpool L69 3BX, Great-Britain
3 Department of I.P.I. Chemistry, Donnan Laboratories, University of Liverpool, GB-Liverpool L69 3BX, Great-Britain
4 SERC Daresbury Laboratory, GB-Warrington WA4 4AD, Great-Britain
Abstract
SEXAFS has been employed to investigate several submonolayer phases of Cl and Cs adsorbed on various single crystal silver planes. For chlorine adsorption, the nearest-neighbour bond distance is found to be invariant with coverage. In complete contrast, a dramatic increase in the substrate-adsorbate bond length is observed with increase in coverage of Cs. This different behaviour of Cl and Cs adsorbates is discussed in terms of the electron transfer processes between electronegative and electropositive adsorbates and the substrate.