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A High-Valent Manganese(IV)–Oxo–Cerium(IV) Complex and Its Enhanced Oxidizing Reactivity

Title
A High-Valent Manganese(IV)–Oxo–Cerium(IV) Complex and Its Enhanced Oxidizing Reactivity
Authors
Karmalkar D.G.Sankaralingam M.Seo M.S.Ezhov R.Lee Y.-M.Pushkar Y.N.Kim W.-S.Fukuzumi S.Nam W.
Ewha Authors
남원우이용민Shunichi Fukuzumi서미숙김원석
SCOPUS Author ID
Shunichi Fukuzumiscopus; 남원우scopus; 서미숙scopusscopus; 김원석scopus
Issue Date
2019
Journal Title
Angewandte Chemie - International Edition
ISSN
1433-7851JCR Link
Citation
Angewandte Chemie - International Edition vol. 58, no. 45, pp. 16124 - 16129
Keywords
biomimetic chemistryelectron transferhigh-valent manganese–oxooxygen atom transferredox-active metal ions
Publisher
Wiley-VCH Verlag
Indexed
SCI; SCIE; SCOPUS scopus
Document Type
Article
Abstract
A mononuclear nonheme manganese(IV)–oxo complex binding the Ce4+ ion, [(dpaq)MnIV(O)]+–Ce4+ (1-Ce4+), was synthesized by reacting [(dpaq)MnIII(OH)]+ (2) with cerium ammonium nitrate (CAN). 1-Ce4+ was characterized using various spectroscopic techniques, such as UV/Vis, EPR, CSI-MS, resonance Raman, XANES, and EXAFS, showing an Mn−O bond distance of 1.69 Å with a resonance Raman band at 675 cm−1. Electron-transfer and oxygen atom transfer reactivities of 1-Ce4+ were found to be greater than those of MnIV(O) intermediates binding redox-inactive metal ions (1-Mn+). This study reports the first example of a redox-active Ce4+ ion-bound MnIV-oxo complex and its spectroscopic characterization and chemical properties. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI
10.1002/anie.201910032
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자연과학대학 > 화학·나노과학전공 > Journal papers
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