Evidence map›Paper›PMID 20360565›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Concerted O atom-proton transfer in the O-O bond forming step in water oxidation.

Zuofeng Chen, Javier J Concepcion, Xiangqian Hu, Weitao Yang, Paul G Hoertz, Thomas J Meyer

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

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0cells of the map it votes in
42citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed.

  1. Article
  2. A Homogeneously Catalyzed Paired Electrolytic Cell for Hydrogen Peroxide Production.Angewandte Chemie (International ed. in English) · 2026
    Article
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  4. Article
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  6. Review
  7. Electron-DonatingInorganic chemistry · 2025
    Article
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  11. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Zuofeng ChenDepartment of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Javier J Concepcion
Xiangqian Hu
Weitao Yang
Paul G Hoertz
Thomas J Meyer

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As the terminal step in photosystem II, and a potential half-reaction for artificial photosynthesis, water oxidation (2H(2)O --> O(2) + 4e(-) + 4H(+)) is key, but it imposes a significant mechanistic challenge with requirements for both 4e(-)/4H(+) loss and O-O bond formation. Significant progress in water oxidation catalysis has been achieved recently by use of single-site Ru metal complex catalysts such as [Ru(Mebimpy)(bpy)(OH(2))](2+) [Mebimpy = 2,6-bis(1-methylbenzimidazol-2-yl)pyridine; bpy = 2,2'-bipyridine]. When oxidized from to Ru(V) = O(3+), these complexes undergo O-O bond formation by O-atom attack on a H(2)O molecule, which is often the rate-limiting step. Microscopic details of O-O bond formation have been explored by quantum mechanical/molecular mechanical (QM/MM) simulations the results of which provide detailed insight into mechanism and a strategy for enhancing catalytic rates. It utilizes added bases as proton acceptors and concerted atom-proton transfer (APT) with O-atom transfer to the O atom of a water molecule in concert with proton transfer to the base (B). Base catalyzed APT reactivity in water oxidation is observed both in solution and on the surfaces of oxide electrodes derivatized by attached phosphonated metal complex catalysts. These results have important implications for catalytic, electrocatalytic, and photoelectrocatalytic water oxidation.

Indexed as

ProtonsCatalysisElectrochemistryElectrodesKineticsMetalsModels, ChemicalModels, TheoreticalOxidation-ReductionOxygenPhotosynthesisPotentiometryTemperatureWaterMetalsOxygenProtonsWater

Identifiers

PMID20360565
PMCPMC2867729

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.