Peroxidase activity of dimanganese(III) complexes with the [Mn2(μ-OAc)(μ-OR)2]3+ core

摘要: Abstract Catalytic activity of three dinuclear Mn III complexes general formula [Mn 2 (μ-OAc)(μ-OMe)(L)]BPh 4 (H 3 L = 1,5-bis[(2-hydroxy-5-X-benzyl)(2-pyridylmethyl)amino] pentan-3-ol, 1 : X = H, X = OMe, X = Br) in the oxidation phenol, 2,6-dimethoxyphenol and wood pulp by H O has been investigated. The role pH, electronic properties ligand metal coordination environment on ability these to activate examined. catalysts showed similar independently aromatic substituent were found be 2–3 times more active at pH 9.00 than neutral pH. Bleaching Kraft activated alkaline media decreased kappa number 16%, room temperature low catalyst concentration, without damage cellulose fibers. It was that exchange methoxo- acetato-bridges an oxo-bridge reduces catalytic compounds, probably direct binding phenolate a vacant site center.