Abstract
The oxidation of the CH 2 species produced by thermal and photo-induced dissociation of CH 2I 2 has been followed by X-ray and ultraviolet photoelectron spectroscopies and temperature programmed spectroscopy. Preadsorbed oxygen atoms hindered the thermal dissociation of CH 2I 2. The dominant pathway of CH 2 formed above 200 K is its coupling into C 2H 4, which interacted with adsorbed O atoms. Formaldehyde formation was not observed. However, CH 2 produced by illumination of adsorbed CH 2I 2 at ∼100 K combined with adsorbed O to give CH 2O.
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