FTIR overtone spectroscopy on surfaces. The C—O mode in chemisorbed methoxy on Ni(111)

Zenobi, Renato; Xu, Jian; Yates, John T.; Persson, B. N. J.; Volokitin, A. I.

doi:10.1016/0009-2614(93)87165-y

Cited by 52 publications

(41 citation statements)

References 34 publications

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“…10 Again, it is clear that a good qualitative agreement between experimental data and calculations can be achieved. As was done for the CH 3 O-Cu͑100͒ system, experimental data was used as input into Eq.…”

Section: B Calculationsmentioning

confidence: 67%

Fermi resonance coupling in a surface adsorbate: The C–H stretch in methoxy adsorbed on Cu(100) calculations and experiments

Ásmundsson

Uvdal

2000

The Journal of Chemical Physics

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The C–H stretch spectrum of methoxy adsorbed on Cu(100) has been measured using Fourier transform infrared spectroscopy. Fermi resonance coupling constants in methoxy are calculated using a normal mode model where the unperturbed modes were either experimentally determined or inferred from ab initio calculations performed for a methoxy-Mo model complex. The measured frequency shifts and intensity redistribution observed in the C–H stretch region are qualitatively reproduced by the calculations.

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Section: B Calculationsmentioning

confidence: 67%

Fermi resonance coupling in a surface adsorbate: The C–H stretch in methoxy adsorbed on Cu(100) calculations and experiments

Ásmundsson

Uvdal

2000

The Journal of Chemical Physics

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“…This interpretation is corroborated by several studies on single crystals, in which methoxy was observed to exhibit absorption bands in the range of 2790 to 2820 cm À1 and 2900 to 2920 cm À1 . 58,[64][65][66] If we switch from a CH 3 OH beam to a CD 3 OD beam (Fig. 6(b)), all CH absorption bands are replaced by the corresponding CD bands.…”

Section: Methanol Dehydrogenation On Pd/al 2 O 3 /Nial(110)mentioning

confidence: 99%

Adsorption, decomposition and oxidation of methanol on alumina supported palladium particles

Schauermann

Hoffmann

Johánek

et al. 2002

Phys. Chem. Chem. Phys.

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“…Since the observation of an asymmetric stretch, a (CH 3 ), in the methoxy spectrum indicates a tilted surface species, the misassignment of overtones as a (CH 3 ) led to considerable confusion concerning adsorbate geometries. Tilted species were identified from infrared spectra of methoxy on Cu͕100͖ 13 and Ni͕111͖, 14 whereas structural studies found upright geometries on both surfaces. 15,16 High resolution RAIR spectra of partially-deuterated isotopomers, such as CHD 2 OH, have re-cently been shown to provide important additional information towards deducing methoxy geometries from vibrational spectra.…”

Section: Introductionmentioning

confidence: 99%

Multilayer growth and chemisorbate reactivity of methanol on Pd{110}

Pratt

Escott

King

2003

The Journal of Chemical Physics

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An electron energy loss spectroscopy study of resonance population in ethylene chemisorbed on Pd (110) The development of a methanol multilayer on Pd͕110͖ at 124 K has been examined with reflectionabsorption infrared spectroscopy ͑RAIRS͒. The spectra indicate that a crystalline multilayer grows in which hydrogen-bonded chains of molecules are parallel to the substrate. A ''sandwich'' phase is identified and consists of several physisorbed layers in between the chemisorbed layer and the crystalline phase. Methanol desorption and decomposition on heating have been followed with simultaneous temperature-programmed RAIRS and TPD measurements. Desorption of chemisorbed methanol is observed at 214 K, whereas the decomposition reaction yielding adsorbed CO and H proceeds at ϳ295 K on heating at 2 K s Ϫ1 . Spectral bands observed on adsorption at 180 K to low exposure, which precede the appearance of the CO signal, are tentatively attributed to chemisorbed methanol. No conclusive evidence for a methoxy intermediate in the decomposition reaction is found.

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FTIR overtone spectroscopy on surfaces. The C—O mode in chemisorbed methoxy on Ni(111)

Cited by 52 publications

References 34 publications

Fermi resonance coupling in a surface adsorbate: The C–H stretch in methoxy adsorbed on Cu(100) calculations and experiments

Fermi resonance coupling in a surface adsorbate: The C–H stretch in methoxy adsorbed on Cu(100) calculations and experiments

Adsorption, decomposition and oxidation of methanol on alumina supported palladium particles

Multilayer growth and chemisorbate reactivity of methanol on Pd{110}

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