A High‐Valent Non‐Heme μ‐Oxo Manganese(IV) Dimer Generated from a Thiolate‐Bound Manganese(II) Complex and Dioxygen
- Univ. Grenoble Alpes, CNRS, UMR 5250, DCM 38000 Grenoble France, Univ. Grenoble Alpes, CNRS, UMR 5249, LCBM 38000 Grenoble France
- Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science The University of Manchester 131 Princess Street Manchester M1 7DN UK
- Univ. Grenoble Alpes, CNRS, UMR 5250, DCM 38000 Grenoble France
- European Synchrotron Radiation Facility (ESRF) 71 Avenue des Martyrs 38000 Grenoble France
- Department of Chemistry Humboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
This study deals with the unprecedented reactivity of dinuclear non‐heme Mn II –thiolate complexes with O 2 , which dependent on the protonation state of the initial Mn II dimer selectively generates either a di‐μ‐oxo or μ‐oxo‐μ‐hydroxo Mn IV complex. Both dimers have been characterized by different techniques including single‐crystal X‐ray diffraction and mass spectrometry. Oxygenation reactions carried out with labeled 18 O 2 unambiguously show that the oxygen atoms present in the Mn IV dimers originate from O 2 . Based on experimental observations and DFT calculations, evidence is provided that these Mn IV species comproportionate with a Mn II precursor to yield μ‐oxo and/or μ‐hydroxo Mn III dimers. Our work highlights the delicate balance of reaction conditions to control the synthesis of non‐heme high‐valent μ‐oxo and μ‐hydroxo Mn species from Mn II precursors and O 2 .
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1401557
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 28 Vol. 56; ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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