Physical Review Letters · 1997 · 33 citations · 15 references
Natural SciencesChemistryPhysicsCondensed Matter PhysicsSurface ChemistrySurface ScienceInfrared SpectroscopyMetal-ligand BondingSurface CrystallographySurface PhysicsSurface SpectroscopyTransition Metal ChemistryAbsorption SpectraDipole ModesInfrared Absorption SpectraInfrared Absorption SpectroscopyInfrared SpectraMolecular Vibrational ModesVibrational ModesVibrational Spectroscopy Of Surfaces
The metal-molecule stretch vibrational mode of CO chemisorbed in the $c(4\ifmmode\times\else\texttimes\fi{}2)$ structure on a Pt(111) surface at 100 K has been studied using infrared spectroscopy. For the bridge-bonded molecules the infrared absorption spectra reveal a doublet structure, which is assigned to a Fermi-resonance between the stretch mode and a combination of parallel, dipole-forbidden vibrational modes. Furthermore, no so-called antiabsorption connected to the frustrated rotation is detected, in contrast to what is found on close-packed copper surfaces.
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On the adsorption of CO on Pt(111)
H. Steininger, S. Lehwald, H. Ibach · Surface Science · 1982 · 565 citations