Hollow-site molecular adsorption for NO on Pt(111) and Ni(111): Invalidating vibrational site assignment rules

Journal Article · Thu Jul 15 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.2859· OSTI ID:6404444

Materer, N; Barbieri, A; Gardin, D; Starke, U; Batteas, J D; Van Hove, M A; Somorjai, G A ^[1]

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1. Materials Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States) Department of Chemistry, Univeristy of California, Berkeley, California 94720 (United States)

Dynamical low-energy electron diffraction analyses of ordered structures of NO molecules chemisorbed on Pt(111) and on Ni(111) conclusively yield threefold-coordinated hollow-site adsorption, and reasonable bond lengths. This invalidates long-standing site assignments based on vibrational measurements, calling that approach into question. The results of this study also contrast with the lower-coordinated bridge and top sites found for CO molecules on the same metal surfaces. The NO molecules are oriented close to the surface normal, O end up.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6404444
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:4; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NICKEL
SORPTIVE PROPERTIES
NITROGEN OXIDES
CHEMISORPTION
PLATINUM
BOND LENGTHS
ELECTRON DIFFRACTION
MONOCRYSTALS
TEMPERATURE RANGE 0065-0273 K
VIBRATIONAL STATES
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
DIMENSIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
LENGTH
METALS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
SCATTERING
SEPARATION PROCESSES
SORPTION
SURFACE PROPERTIES
TEMPERATURE RANGE
TRANSITION ELEMENTS
360104* - Metals & Alloys- Physical Properties
400201 - Chemical & Physicochemical Properties