Electrochemical properties of the [SiW₁₀O₃₆(M₂O₂E₂)]⁶⁻ polyoxometalate series (M = Mo(v) or W(v); E = S or O)

Abstract

Ruhlmann, et al.. Electrochemical properties of the [SiW 10 O 36 (M 2 O 2 E 2 )] 6-polyoxometalate series (M = Mo( v ) or W( v ); E = S or O).

Electrochemical properties of the [SiW10O36(M2O2Kemmegne‐Mbouguen1, Floquet2, Cadot3 2021Comptes Rendus. ChimieSelf Cite4000View full textAdd to dashboardCite

“…This result suggests that the breaking of the Mo-Mo bond resulting from this oxidation process leads to a degradation of this compound in aqueous medium whatever the pH used in the present study. In contrast, this process was demonstrated to be relatively fast and chemically reversible in DMF medium (see Figure 2) [54].…”

“…In a recent paper, we studied the electrochemical properties of three compounds resulting from the combination of the divacant POM γ- [ Figure 1) in DMF [54]. We evidenced that the compounds display two electron-reduction processes centered on the W VI atoms of the POM part while the oxidation process is assigned to the oxidation of the two M(V) centers of the [M 2 O 2 E 2 ] 2+ clusters into M(VI) with a breaking of the M-M bond (see Figure 2).…”

Nucleation mechanisms and speciation of metal oxide clusters

“…Note that the seemingly linear trends from which the box plots are distributed is due to their general formula. Compounds with indexes from 0 to 14 In order to test the accuracy of the formation constants, we have plotted the speciation diagrams of the three best models according to their R 2 . The results are presented in Fig.…”

“…1 Although the rst-ever characterized structure was synthesized by Berzelius almost two centuries ago, 2 POMs have not ceased to attract attention. As a matter of fact, they display a broad variety of present applications in catalysis, [3][4][5][6][7][8][9][10][11] nuclear reprocessing, 12,13 electro-chemistry 14 and potential uses in information technologies, 15,16 medicine, [17][18][19] and energy. [20][21][22] The synthesis of POMs usually takes place by reacting the corresponding oxo-anion monomer, for instance [MoO 4 ] 2À , with additional acids, bases or other salts, in aqueous solution where a plethora of hydrolysis, aggregation and condensation reactions triggers the formation of discrete clusters.…”

Consequences of ligand derivatization on the electronic properties of polyoxovanadate-alkoxide clusters

“…While these systems have been studied for aqueous RFB application, their application in NRFB systems has been limited by their incompatibility with organic solvents [24][25][26][27]. However, the attractive synthetic and electrochemical properties of these multimetallic systems prompt further exploration of POM-based NRFB charge carriers [16,17,[28][29][30][31].…”