Electrochemical one-electron oxidation of two dozen fluorinated and otherwise halogenated CB11− anions has been examined in solvents such as liquid SO2 and (n-C4F9)3N and compared with results of quantum chemical calculations. The redox potentials are strikingly high, but only a few of the oxidations are reversible. HCB11F5(CF3)6− does not give an oxidation wave up to 4 V above ferrocene/ferricenium. The neutral radical can be prepared by chemical oxidation, is stable at low temperatures, and is a remarkable oxidant.

Oxidation of fluorinated and other halogenated CB11 carborane anions

251st National Meeting (2016)

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