Oxyfluorides disproportionation

Numerous reactions have been reported in which FCIO2 is formed as a product. Most of these involve the interaction between a chlorine fluoride or oxyfluoride with an oxide or hydroxide. The oxidation state of the chlorine fluoride is not important since +1, -l-III, and - -V compounds all yield FCIO2 owing to the tendency of the lower oxyfluorides, such as FCIO, to disproportionate. The presence of excess chlorine fluoride is important to avoid formation of chlorine oxides. The following equations are typical examples for these types of reactions ... 

The disproportionation of chlorofluoromethanes is also catalyzed by iron(lll) halides,21 chromium oxyfluorides and other metal halides. With tron(III) chloride on activated carbon at temperatures above 300 C, for example, the compounds carbon Iclrafluoride, chloro-fluoromethane, trtchlorofluoromclhanc and carbon tetrachloride are obtained from dichloro-fluoromethane (Scheme 3) ... 

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