Volume 62, Issue 36 e202308192
Communication

Tracking an FeV(O) Intermediate for Water Oxidation in Water

Xiang-Zhu Wei

Xiang-Zhu Wei

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Tian-Yu Ding

Tian-Yu Ding

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Dr. Yang Wang

Dr. Yang Wang

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Dr. Bing Yang

Dr. Bing Yang

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Dr. Qing-Qing Yang

Dr. Qing-Qing Yang

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Dr. Shengfa Ye

Corresponding Author

Prof. Dr. Shengfa Ye

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Prof. Dr. Chen-Ho Tung

Prof. Dr. Chen-Ho Tung

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Dr. Li-Zhu Wu

Corresponding Author

Prof. Dr. Li-Zhu Wu

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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First published: 11 July 2023
Citations: 4

Graphical Abstract

An electron-rich and oxidation-resistant ligand is effective at stabilizing high-valent iron-oxo intermediates involved in the water oxidation reaction. UV/Vis, XAS, EPR, electrochemical and kinetic measurements, allow a high-valent FeV(O) species that participates in O−O bond formation with higher reactivity and shorter lifetime to be tracked in a real catalytic water oxidation reaction.

Abstract

High-valent iron-oxo species are appealing for conducting O−O bond formation for water oxidation reactions. However, their high reactivity poses a great challenge to the dissection of their chemical transformations. Herein, we introduce an electron-rich and oxidation-resistant ligand, 2-[(2,2′-bipyridin)-6-yl]propan-2-ol to stabilize such fleeting intermediates. Advanced spectroscopies and electrochemical studies demonstrate a high-valent FeV(O) species formation in water. Combining kinetic and oxygen isotope labelling experiments and organic reactions indicates that the FeV(O) species is responsible for O−O bond formation via water nucleophilic attack under the real catalytic water oxidation conditions.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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