Tilted adsorption of benzene on Pt (110) 1 × 2
Zebisch P, Stichler M, Trischberger P, Weinelt M, Steinrück HP (1998)
Publication Type: Journal article, Original article
Publication year: 1998
Journal
Original Authors: Zebisch P., Stichler M., Trischberger P., Weinelt M., Steinrück H.-P.
Publisher: Elsevier
Book Volume: 396
Pages Range: 61-77
URI: https://www.scopus.com/record/display.uri?eid=2-s2.0-0031680478&origin=inward
Abstract
The adsorption of benzene on the reconstructed Pt (110) 1 × 2 surface was studied by temperature-programmed desorption (TPD), low-energy electron diffraction (LEED), angle-resolved UV photoemission (ARUPS) and near-edge X-ray absorption spectroscopy (NEXAFS). At 100 K, benzene is molecularly adsorbed on the Pt (110) 1 × 2 surface. The saturated layer is disordered and corresponds to a coverage of ∼0.28 ML. Annealing to 280 K leads to partial benzene desorption and to the formation of a well-ordered (4 × 2) layer (relative to the unreconstructed surface) with a coverage of 0.25 ML. The missing ((2n + 1)/4, 0) adsorbate LEED spots along [11̄0] indicate a glide plane in the adsorbate structure and the existence of two molecules per unit cell. In this layer, benzene adsorbs with the molecular plane tilted by ∼30° in the [001] direction, as determined from ARUPS and NEXAFS. This geometry corresponds to a nearly flat adsorption on the (111) microfacets of the troughs of the reconstructed surface. The molecules have a well-defined azimuthal orientation with a C-H bond along the [11̄0] azimuth. For dilute layers (θ = 0.12 ML) and a disordered layer with the same coverage as the ordered layer (θ = 0.25 ML), the molecules are also tilted into the troughs, a preferential azimuthal orientation is, however, not observed. © 1998 Elsevier Science B.V.
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APA:
Zebisch, P., Stichler, M., Trischberger, P., Weinelt, M., & Steinrück, H.-P. (1998). Tilted adsorption of benzene on Pt (110) 1 × 2. Surface Science, 396, 61-77.
MLA:
Zebisch, P., et al. "Tilted adsorption of benzene on Pt (110) 1 × 2." Surface Science 396 (1998): 61-77.
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