Spectroscopic and kinetic evidence for redox cycling, catalase and degradation activities of MnIII(TPPS) in a basic aqueous peroxide medium

M. Procner; Ł. Orzeł; G. Stochel; R. van Eldik

doi:10.1039/C6CC01437B

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Spectroscopic and kinetic evidence for redox cycling, catalase and degradation activities of Mn^III(TPPS) in a basic aqueous peroxide medium†

M. Procner,^a Ł. Orzeł,^a G. Stochel^a and R. van Eldik*^ab

Author affiliations

* Corresponding authors

^a Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-066 Kraków, Poland

^b Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany
E-mail: rudi.vaneldik@fau.de

Abstract

Mn^III(TPPS) was found to react rapidly with hydrogen peroxide in basic aqueous solution to form intermediate (TPPS)Mn^V [double bond, length as m-dash] O and (TPPS)Mn^IVO species which, in the presence of excess H₂O₂, are reduced fully back to Mn^III(TPPS) with clear evidence for redox cycling of Mn^III(TPPS). The system shows very strong catalase and degradation activities.

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Article information

DOI: https://doi.org/10.1039/C6CC01437B
Article type: Communication
Submitted: 16 Feb 2016
Accepted: 10 Mar 2016
First published: 10 Mar 2016

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Chem. Commun., 2016,52, 5297-5300

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Spectroscopic and kinetic evidence for redox cycling, catalase and degradation activities of Mn^III(TPPS) in a basic aqueous peroxide medium

M. Procner, Ł. Orzeł, G. Stochel and R. van Eldik, Chem. Commun., 2016, 52, 5297 DOI: 10.1039/C6CC01437B

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