Preparation and Characterization of Zinc(II)-Based Lewis/Brshnsted Acidic Deep Eutectic Solvents

Year: 2023

Authors: Pelosi C., Quaranta A., Rollo M., Martinelli E., Duce C., Ciancaleoni G., Bernazzani L.

Autors Affiliation: Univ Pisa, Dept Chem & Ind Chem, Via Giuseppe Moruzzi 13, I-56124 Pisa, Italy; CNR, Ist Nazl Ott INO, Via Moruzzi, I-56124 Pisa, Italy.

Abstract: Lewis/Bronsted acidic deep eutectic solvents (LBDESs) are a recent class of solvents that combine the two types of acidity. In some cases, this synergy leads to enhanced catalytic properties for many reactions and applications. For this reason, it is important to discover more LBDESs. In this work, we prepared and characterized four different zinc(II)-based LBDESs, mixing ZnCl2 and various Bronsted acids: acetic, glycolic, levulinic, and formic acids. Apart from the latter, for which the corresponding DES is not thermally stable, the samples have been characterized in terms of density, viscosity, and conductivity. Notably, as zinc(II) is a diamagnetic metal, all of them are suitable for NMR spectroscopy, for example, for kinetic and mechanistic studies.

Journal/Review: MOLECULES

Volume: 28 (24)      Pages from: 8054-1  to: 8054-13

More Information: Luca Maffei is acknowledged for technical support.
KeyWords: Lewis/Bronsted acidic deep eutectic solvents; LBDES; zinc (II); physicochemical properties of DESs
DOI: 10.3390/molecules28248054

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