Issue 17, 2014
From the journal:

Dalton Transactions

The role of carboxylato ligand dissociation in the oxidation of chrysin with H2O2 catalysed by [Mn2III,IV(μ-CH3COO)(μ-O)2(Me4dtne)](PF6)2†

Shaghayegh Abdolahzadeh,a   Nicola M. Boyle,a   M. Lisa Hoogendijk,a   Ronald Hage,b   Johannes W. de Boerb  and  Wesley R. Browne*a  

* Corresponding authors

a Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, Groningen, The Netherlands
E-mail: w.r.browne@rug.nl
Tel: +0031 50363 4428

b Catexel Ltd, BioPartner Center Leiden, Galileiweg 8, 2333 BD Leiden, The Netherlands

Abstract

The aqueous and non-aqueous chemistry of the complex [Mn2III,IV(μ-CH3COO)(μ-O)2(Me4dtne)](PF6)2 (where Me4dtne = 1,2-bis(4,7-dimethyl-1,4,7-triazacyclonon-1-yl)ethane), which has been demonstrated as an exceptionally active catalyst in the bleaching of raw cotton and especially wood pulp at high pH (>11), is explored by UV/vis absorption, Raman and EPR spectroscopies and cyclic voltammetry. The data indicate that dissociation of the μ-acetato bridge is essential to the catalyst activity and rationalises the effect of sequestrants such as DTPA on its performance.

Graphical abstract: The role of carboxylato ligand dissociation in the oxidation of chrysin with H2O2 catalysed by [Mn2III,IV(μ-CH3COO)(μ-O)2(Me4dtne)](PF6)2

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Article information

DOI
https://doi.org/10.1039/C3DT53174K
Article type
Paper
Submitted
10 Nov 2013
Accepted
13 Feb 2014
First published
14 Feb 2014
This article is Open Access
Creative Commons BY license

Dalton Trans., 2014,43, 6322-6332

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The role of carboxylato ligand dissociation in the oxidation of chrysin with H2O2 catalysed by [Mn2III,IV(μ-CH3COO)(μ-O)2(Me4dtne)](PF6)2

S. Abdolahzadeh, N. M. Boyle, M. L. Hoogendijk, R. Hage, J. W. de Boer and W. R. Browne, Dalton Trans., 2014, 43, 6322 DOI: 10.1039/C3DT53174K

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