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• W2809504881 abstract "Abstract The hydrogen evolution reaction (HER) has attracted much attention within the scientific community because of increasing demands of modern society for clean and renewable energy sources. Molecular complexes of 3d‐transition metals, such as cobalt, hold potential to replace platinum for the HER in acidic media. Among these, cage complexes such as tris‐glyoximate metal clathrochelates, have demonstrated promising catalytic properties towards the HER. However, it is not clear whether the catalytic activity of this molecule stems from metal‐centered activation of H + , due to a low oxidation state of the metal stabilized by the surrounding organic cage, or if it is the organic cage playing a further cooperative role in bringing protons together. Herein, we report on a density functional theory study of two possible mechanisms for the HER catalyzed by a model Co clathrochelate. To assess the putative ligand involvement in the mechanism, several combinations of single and double protonation sites were investigated. The structural and energetic analysis of relevant intermediates suggests that the electrocatalytic mechanism is not based on the cooperation between the ligand and the metal. Instead, it is mainly due to the activation of H + by the Co metallocenter. Our calculations further suggest that the last step in the mechanism is a proton coupled electron transfer step." @default.
• W2809504881 created "2018-06-29" @default.
• W2809504881 creator A5015224794 @default.
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• W2809504881 date "2018-07-19" @default.
• W2809504881 modified "2023-09-26" @default.
• W2809504881 title "Approach to the Mechanism of Hydrogen Evolution Electrocatalyzed by a Model Co Clathrochelate: A Theoretical Study by Density Functional Theory" @default.
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• W2809504881 doi "https://doi.org/10.1002/cphc.201800383" @default.
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• W2809504881 hasPublicationYear "2018" @default.
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