Infrared Spectra and Bonding of Nitric Oxide Adsorbed on Nickel and Iron

Blyholder, G.; Allen, Marvin C.

doi:10.1021/j100895a059

Cited by 53 publications

(9 citation statements)

References 2 publications

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“…Then, after O2 had been introduced, the (CWz-treated sample was heated in O2 at progressively higher temperatures. The series of spectra recorded showed that up to about 200°C the sample behaved like a (CN)2-treated RS that was being degassed, i.e., the spectral changes were like those shown in FIGURE 47. At higher temperatures, prominent bands indicating the formation of Si-NCO groups appeared that, along with the rest of the bands present, declined and disappeared upon heating at higher temperatures.…”

Section: Heating (Cn2-treated Rs In O2mentioning

confidence: 78%

REACTIVE SILICA: Novel Aspects of the Chemistry of Silica Surfaces*

Morterra

Low

1973

Annals of the New York Academy of Sciences

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Section: Heating (Cn2-treated Rs In O2mentioning

confidence: 78%

REACTIVE SILICA: Novel Aspects of the Chemistry of Silica Surfaces*

Morterra

Low

1973

Annals of the New York Academy of Sciences

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“…The reflectance spectrum of nitric monoxide on the iron surface shows a band at 1825 cm-1, which is in good accord with the transmission spectra of chemisorbed nitric monoxide on the nickel surface. 13 Recently, Calahorra and Folman studied the adsorption of nitric monoxide on germanium.14 They ascribed two peaks at 1853 and 1750 cm"1 to the NO dimer formed on the surface and assumed the higher frequency is that of the symmetric mode, whereas the lower one is due to the asymmetric mode of the NO bond. In the present investigation, the reflectance spectra of isoamyl nitrite on evaporated nickel and iron showed two absorption bands at 1820 and 1750 cm"1, and showed a band at 1850 cm-1 on copper.…”

Section: Resultsmentioning

confidence: 99%

Molecular orientation of chemisorbed formates and nitric monoxides on evaporated metal surfaces by infrared reflectance spectroscopy

Ito¹,

Suëtaka²

1975

J. Phys. Chem.

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The adsorption of formic acid on evaporated copper and aluminum surfaces was studied using an infrared reflection method. The molecular orientation of the chemisorbed species on metal surfaces was successfully observed by this technique. When formic acid vapor was introduced over copper or aluminum surfaces, formate ions were observed. The reflection spectra of formate ions on copper showed the 1360-cm-1 band of the symmetric OCO stretching vibration but not the 1600-cm-1 antisymmetric OCO band; whereas the reverse was true of the transmission spectra of smooth copper films deposited on the polished KBr plates. These results lead to the conclusion that the chemisorbed formate molecules are oriented almost vertically on the smooth copper surface. Nitric monoxide and isoamyl nitrite adsorbed on evaporated copper, nickel, and iron surfaces were also investigated and discussed.

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“…Hydrogen has previously been reported to cause shifts to lower wavenumbers of infrared bands due to NO on Fe/Si0,. 28 The shifts were ascribed to electronic effects of adsorbed hydrogen. However, the present shifts from 1825 to 18 10 cm-l and from 1755 to 1740 cm-l were accompanied by appreciable intensity changes and an alternative explanation is tentatively suggested.…”

Section: Discussionmentioning

confidence: 99%