Abstract
AbstractPerylene, naphthacene, anthracene and some substituted anthracenes are oxidized to the dipositive ions by SbF5 (neat or in SO2CIF). In FSO3H‐SbF5 dication formation takes only place with the easily oxidizable arenes perylene and naphthacene. The dication of anthracene has also been obtained by bromide abstraction from 9, 10‐dibromo‐9, 10‐dihydroanthracene. The PMR spectra of the dications are reported. Like in the dianions, the sum of the charge‐induced shifts varies considerably from one arene to the other.
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