A High-Valent Manganese(IV)–Oxo–Cerium(IV) Complex and Its Enhanced Oxidizing Reactivity
- 주제(키워드) biomimetic chemistry , electron transfer , high-valent manganese–oxo , oxygen atom transfer , redox-active metal ions
- 등재 SCIE, SCOPUS
- 발행기관 Wiley-VCH Verlag
- 발행년도 2019
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000162433
- 본문언어 영어
- Published As http://dx.doi.org/10.1002/anie.201910032
- PubMed https://pubmed.ncbi.nlm.nih.gov/31489757
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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
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