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Updated: Apr 5, 2026

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
Published on: April 28, 2023
Proton-Coupled Electron Transfer Reactions Catalysed by 3 d Metal Complexes
1Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstr. 4, 37077 Göttingen (Germany). inke.siewert@chemie.uni-goettingen.de.
Proton-coupled electron transfer (PCET) reactions are crucial for energy conversion. This review focuses on first-row transition metals catalyzing key reactions like water oxidation and CO2 reduction, comparing PCET to electron-only pathways.
Area of Science:
- Inorganic Chemistry
- Catalysis
- Energy Conversion
Background:
- Proton-coupled electron transfer (PCET) reactions are fundamental to natural energy processes.
- PCET pathways are increasingly utilized in artificial energy conversion systems.
- First-row transition metals are cost-effective catalysts for various chemical transformations.
Purpose of the Study:
- To review PCET reactions catalyzed by first-row transition-metal complexes.
- To highlight the role of PCET in water oxidation, oxygen reduction, hydrogen evolution, and CO2 reduction.
- To compare PCET pathways with electron-only transfer mechanisms in catalytic systems.
Main Methods:
- Literature review of PCET reactions.
- Focus on first-row transition-metal complexes.
- Comparative analysis of catalytic systems.
Main Results:
- PCET catalysis by first-row transition metals is effective for key energy reactions.
- Understanding PCET pathways is crucial for optimizing artificial energy conversion.
- Comparison with electron-only pathways elucidates the unique advantages of PCET.
Conclusions:
- First-row transition metals are promising catalysts for energy-relevant PCET reactions.
- PCET mechanisms offer distinct advantages over electron-only transfer for specific catalytic processes.
- Further research into PCET is vital for advancing artificial photosynthesis and fuel generation.
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