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Article Dans Une Revue Angewandte Chemie International Edition Année : 2023

Clustering Six Electrons within “Dawson-Like” Polyoxometalate: An Open Route toward Its Post-functionalization

Résumé

Super-reduction of polyoxometalates (POMs) in solution is of fundamental interest for designing innovative energy storage systems. In this article, we show that the “Dawson-like” POM can undergo a disproportionation process during its massive electron uptake, leading to species containing three metal-metal bonds as evidenced by X-ray diffraction, multi-nuclear magnetic resonance spectroscopy (1H and 183W NMR), extended X-ray absorption fine structure (EXAFS), UV/Vis, and voltammetry techniques. This result indicates that electron storing within metal-metal bonds is not a unique property of Keggin-type POM as postulated since the 70s. Besides, we demonstrate that the presence of an electron-rich triad in the “Dawson-like” POM allows its post-functionalization with additional tungstate ions, generating a chiral molecule that is also the largest WIV-containing POMs known to date.
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hal-04334508 , version 1 (22-12-2023)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Gabrielle Mpacko Priso, Mohamed Haouas, Nathalie Leclerc, Clément Falaise, Emmanuel Cadot. Clustering Six Electrons within “Dawson-Like” Polyoxometalate: An Open Route toward Its Post-functionalization. Angewandte Chemie International Edition, 2023, 62 (49), ⟨10.1002/anie.202312457⟩. ⟨hal-04334508⟩
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