10,10′-Dimethyl-9,9′-biacridine acting as a unique electron source compared with the corresponding monomer for the efficient reduction of dioxygen, catalysed by a cobalt porphyrin in the presence of perchloric acid

Shunichi Fukuzumi, Tomohiro Yorisue

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Abstract

An NAD dimer analogue, 10,10′-dimethyl-9.9′-biacridine [(AcrH)2]2] reduces dioxygen much more efficiently than the corresponding monomer, 10-methyl-9,10-dihydroacridine (AcrH2) in the presence of HClO4 and a catalytic amount of CoTPP+ (TPP = tetraphenylporphyrin) in acetonitrile to yield 10-methylacridinium ion and hydrogen peroxide. The mechanistic difference between (AcrH)2 and AcrH2 for the catalytic two-electron reduction of dioxygen is revealed based on the detailed kinetic studies.

Original languageEnglish
Pages (from-to)1607-1611
Number of pages5
JournalJournal of the Chemical Society. Perkin Transactions 2
Issue number10
DOIs
StatePublished - 1991

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