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High-yield synthesis of a unique Mn(III) siloxide complex through KMnO4 oxidation of a Mn(II) precursor

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Abstract

A unique trivalent manganese siloxide complex, blue-violet MnIIILi2Cl[(Ph2SiO)2O]2(THF)4·2THF (3) has been prepared by a straightforward two-step synthetic protocol. Lithiation of (Ph2SiOH)2O (1) followed by reaction with MnCl2(THF)2 gave the structurally remarkable Mn(II) precursor MnIILi4Cl2[(Ph2SiO)2O]2(THF)5·2THF (2). Surprisingly, the final oxidation step could be achieved using KMnO4 in THF to provide the Mn(III) species 3 in high yield (91%). Both title compounds were structurally characterized by single-crystal X-ray diffraction.

Graphical abstract: High-yield synthesis of a unique Mn(iii) siloxide complex through KMnO4 oxidation of a Mn(ii) precursor

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Publication details

The article was received on 18 Sep 2017, accepted on 04 Dec 2017 and first published on 06 Dec 2017


Article type: Communication
DOI: 10.1039/C7DT03500D
Citation: Dalton Trans., 2018, Advance Article
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    High-yield synthesis of a unique Mn(III) siloxide complex through KMnO4 oxidation of a Mn(II) precursor

    V. Lorenz, S. Ehle, P. Liebing, F. Engelhardt, H. Hashemi-Haeri, F. Oehler, D. Hinderberger, S. Busse, J. Urbaschok and F. T. Edelmann, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C7DT03500D

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