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- Title
Clustering Six Electrons within "Dawson‐Like" Polyoxometalate: An Open Route toward Its Post‐functionalization.
- Authors
Priso, Gabrielle Mpacko; Haouas, Mohamed; Leclerc, Nathalie; Falaise, Clément; Cadot, Emmanuel
- Abstract
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.
- Subjects
EXTENDED X-ray absorption fine structure; NUCLEAR magnetic resonance spectroscopy; METAL-metal bonds; ENERGY storage; X-ray absorption near edge structure; ELECTRONS; VOLTAMMETRY technique
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 49, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202312457