The interaction of a monolayer and submonolayer N2O with the Cu(1 0 0) and Ag(1 1 0) surfaces has been studied using near-edge X-ray absorption fine structure spectroscopy. From a detailed analysis of the angular dependent intensity of the molecular resonances we derive a substrate and coverage dependent bent of the N2O molecules upon adsorption. From the comparison of the π* resonance intensity from the terminal Nt, and central Ncnitrogen atoms we conclude that the N2O molecules couple with the Cu surface through the terminal Ntatom in contrast to the Ag surface where the Ncatom is involved. © 2001 Elsevier Science B.V.
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