Bruce PEGOT1, Sébastien FLOQUET1, Emmanuel MAGNIER1
1UVSQ- université Paris Saclay, Versailles, France
Polyoxometalate (POM) compounds constitute a wide family of anionic inorganic compounds that can be finely tuned at the molecular level. The choice of the constituents, including the counter cations, is determinant to design the final architectures. Therefore, owing to their structural and compositional versatility, they possess a vast range of properties and potential applications, notably in catalysis.1 The coupling of POMs with some organic cations allows the design of hybrid compounds at the boundary between molecular chemistry and chemistry of materials.2 Among these hybrid materials, most of them are solid salts or materials with high or even indeterminate melting points and cannot be formally called ionic liquids; Interestingly, among the hundreds of hybrid POMs reported in the literature, only a few dozen of them can be considered as real ionic liquids called POM-ILs.3-4
To add new insights to the existing knowledge on the physical properties of POM-ILs and evaluate the efficiency of this material for homogeneous catalysis, the purpose of this presentation was to expose the synthesis and the full characterization a new POM-ILs,5 which is liquid at room temperature and exhibits the required properties to act both as a good solvent and as catalyst for oxidation of organic molecules. Application for valorization of poorly soluble and recalcitrant residues biomass will be discussed.
 a) A. V. Anyushin, A. Kondinski and T. N. Parac-Vogt, Chem Soc Rev., 2020, 49, 382; b) Y.-R. Wang, Q. Huang, C. T. He, Y. Chen, J. Liu, F.-C. Shen and Y. Q. Lan, Nat. Commun., 2018, 9, 4466.
 Li, W. Li, H. Li and L. Wu, Acc. Chem. Res., 2017, 50, 1391.
 S. Floquet, E. Terazzi, V. S. Korenev, A. Hijazi, L. Guénée, E. Cadot, Liq. Cryst. 2014, 41, 1000-1007.
 Y. Martinetto, B. Pégot, C. Roch-Marchal, B. Cottyn-Boitte, S. Floquet, Eur. J. Inorg. Chem., 2020, 228.
 Y. Martinetto, S. Basset, B. Pégot, C. Roch-Marchal, F. Camerel, J. Jeftic, B. Cottyn-Boitte, E. Magnier, S. Floquet Molecules 2021, 26, 496