The Journal of Chemical Physics · 1966 · 68 citations · 6 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistrySpectroscopySurface ScienceCarbon MonoxideElectron Paramagnetic ResonanceElectron Spin Resonance SpectroscopyMagnetic OxidesMagnetism Of Inorganic CompoundsMetal OxidesParamagnetic CentersParamagnetic Species
It has been determined that a fraction of the carbon monoxide which is adsorbed on magnesium oxide is in a paramagnetic state. Magnesium oxide was degassed at 850°C and 10−5 Torr for 16 h, cooled to room temperature, and then exposed to 150 Torr of high-purity carbon monoxide. The resulting paramagnetic spectrum grew slowly for several weeks. This paper describes the spectrum of the adsorbed CO radical (g∥=2.0021, g∂=2.0055, ax=27 G, ay=11 G, az=0 G), the probable type of site on which the molecule is adsorbed, its bonding, and the effect of evacuating at elevated temperatures.
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