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Solution Dynamics of Hybrid Anderson–Evans Polyoxometalates by David E. Salazar Marcano; Sarah Lentink; Mhamad A. Moussawi; Tatjana N. Parac-Vogt is a Chemistry article available to read on EtoBox.
What is Solution Dynamics of Hybrid Anderson–Evans Polyoxometalates about?
Understanding the stability and speciation of metal-oxo clusters in solution is essential for many of their applications in different areas. In particular, hybrid organic-inorganic polyoxometalates (HPOMs) have been attracting increasing attention as they combine the complementary properties of organic ligands and metal-oxygen nanoclusters. Nevertheless, the speciation and solution behavior of HPOMs have been scarcely investigated. Hence, in this work, a series of HPOMs based on the archetypical Anderson-Evans structure, δ-[MnMoO{(OCH)C-R}], with different functional groups (R = -NH, -CH, -NHCOCHCl, -N═CH(2-CHN) {pyridine; -Pyr}, and -NHCOCHNOS {biotin; -Biot}) and countercations (tetrabutylammonium {TBA}, Li, Na, and K) were synthesized, and their solution behavior was studied in detail. In aqueous solutions, decomposition of HPOMs into the free organic ligand, [MoO], and free Mn was observed over time and was shown to be highly dependent on the pH, temperature, and nature of the ligand functional group but largely independent of ionic strength or the nature of the countercation. Furthermore, hydrolysis of the amide and imine bonds often present in postfunctionalized HPOMs was als
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- Author
- David E. Salazar Marcano; Sarah Lentink; Mhamad A. Moussawi; Tatjana N. Parac-Vogt
- Publisher
- American Chemical Society (ACS)
- Published
- 2021
- Language
- EN
- Field
- Chemistry (Physical Sciences)