Journalartikel

Jahr der Veröffentlichung: 1998

Seiten: 8671-8679

Zeitschrift: The Journal of Chemical Physics

Bandnummer: 108

Heftnummer: 20

DOI Link: https://doi.org/10.1063/1.476296

Verlag: American Institute of Physics

Abstract: 

Hydrogen adsorption on the (101̄0) surfaces of Ru and Re leads to the formation of c(2×2)-3H" role="presentation">c(2×2)-3H phases. As determined by quantitative low-energy electron diffraction (LEED) and density functional theory calculations, hydrogen atoms, as expected, occupy threefold coordinated hcp sites along the densely packed rows and the unexpected short-bridge sites along the ridges in both c(2×2)" role="presentation">c(2×2) phases. The Ru and Re substrates reconstruct only weakly and in a very similar fashion under hydrogen chemisorption. Most notably, there is a buckling in the third substrate layer of about 0.06 Å. Probably (though not outside the limits of error), there are also slightly lateral displacements (0.02 Å) of top-layer substrate atoms which are bridge-coordinated to hydrogen. The metal–hydrogen bond lengths determined for both surfaces correspond to hydrogen radii in the expected range of 0.4–0.7 Å.

Harvard-Zitierstil: Döll, R., Hammer, L., Heinz, K., Bedürftig, K., Muschiol, U., Christmann, K., et al. (1998) Anomalous hydrogen adsorption sites found for the c(2x2)-3H phases formed on the Re(1010) and Ru(1010) surfaces, The Journal of Chemical Physics, 108(20), pp. 8671-8679. https://doi.org/10.1063/1.476296

APA-Zitierstil: Döll, R., Hammer, L., Heinz, K., Bedürftig, K., Muschiol, U., Christmann, K., Seitsonen, A., Bludau, H., & Over, H. (1998). Anomalous hydrogen adsorption sites found for the c(2x2)-3H phases formed on the Re(1010) and Ru(1010) surfaces. The Journal of Chemical Physics. 108(20), 8671-8679. https://doi.org/10.1063/1.476296