New five- and six-coordinate complexes containing the [Mn(III)(Br4cat)2](-) core (Br4cat(2-) = tetrabromo-1,2-catecholate) have been prepared. Homoleptic [Mn(III)(Br4cat)3](3-) reacts rapidly with O2 to produce tetrabromo-1,2-benzoquinone (Br4bq). The [Mn(III)(Br4cat)2](-) fragment is a robust catalytic platform for the aerobic conversion of catechols to quinones. The oxidase activity apparently derives from the coupling of metal- and ligand-centered redox events.
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Reactions of tetrabromocatecholatomanganese(III) complexes with dioxygen.
Inorg Chem
March 2008
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
New five- and six-coordinate complexes containing the [Mn(III)(Br4cat)2](-) core (Br4cat(2-) = tetrabromo-1,2-catecholate) have been prepared. Homoleptic [Mn(III)(Br4cat)3](3-) reacts rapidly with O2 to produce tetrabromo-1,2-benzoquinone (Br4bq). The [Mn(III)(Br4cat)2](-) fragment is a robust catalytic platform for the aerobic conversion of catechols to quinones.
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