Issue 7, 1988

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.

Article information

Article type
Paper

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

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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