O. Endo et al., The effect of a water overlayer on the chlorine-chemisorbed Ag(100) surface studied by Cl K-edge X-ray absorption fine structure, SURF SCI, 463(2), 2000, pp. 135-144
The effect of a water overlayer on the chlorine-chemisorbed silver(100) sur
face has been studied by Cl K-edge X-ray absorption fine structure spectros
copy. It is found that chlorine atoms adsorbed on Ag(100) form a simple c(2
x 2) overlayer with a Cl-Ag bond distance of 2.64 +/- 0.03 Angstrom and Cl
-Cl distance of 4.06 +/- 0.05 Angstrom. By dosing water on the chemisorbed
surface, the Cl-Ag bond is elongated to 2.70 +/- 0.03 Angstrom and theCl-Cl
bond is shortened to 3.90 +/- 0.05 Angstrom. Such a structural change is e
xplained by the partial formation of silver chloride on the surface. (C) 20
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