Cyclometallation reactions. Part 10. Some reactions of polyfluorinated azobenzenes: metallation by fluorine abstraction

Abstract
The reactions of 2,3,4,5,6-pentafluoroazobenzene and 2H-nonafluoroazobenzene with a variety of transition-metal complexes have been examined. In one case, metallation by abstraction of fluorine occurs, in addition to the usual metallation reactions found with azobenzene. The 1H and 19F n.m.r. spectra are discussed.

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