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Issue 7, 1988
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Infrared spectra of CO adsorbed on prismatic faces of α-Fe2O3

Abstract

Crystallites of α-Fe2O3 prepared by thermal decomposition of α-FeO(OH) have regular needle-like shape with statistically predominant prismatic faces (as shown by HRTEM and SAED patterns). The i.r. spectrum of CO adsorbed at 77 K on these microcrystals is characterized by a single peak at 2165.5 cm–1 which is assigned to the stretching mode of CO σ-bonded on Fe3+ ions, with negligible contribution of metal–C back-donation. The frequency of the band shifts with the coverage: this is due to the building up of lateral interactions (dynamic and static) between the oscillators adsorbed on the prismatic faces.

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Article information


J. Chem. Soc., Faraday Trans. 1, 1988,84, 2327-2333
Article type
Paper

Infrared spectra of CO adsorbed on prismatic faces of α-Fe2O3

A. Zecchina, D. Scarano and A. Reller, J. Chem. Soc., Faraday Trans. 1, 1988, 84, 2327
DOI: 10.1039/F19888402327

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