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Synthesis of chiral iron-based ionic liquids: modelling stable hybrid materials

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Abstract

Five chiral iron-containing ionic liquids were synthetized from several chiral ionic liquids (CILs) based on different imidazolium cations. These novel compounds were prepared through an easy synthetic method involving mixing 1 equivalent of iron salt FeX3 (X = Cl or Br) and 1 equivalent of chiral ionic liquid. The so-obtained chiral iron-based ionic liquids contain easily tunable imidazolium cations, which allow the preparation of a wide range of compounds within different functional groups and chiral moieties. These chiral iron-based ionic liquids have been fully characterized by a wide variety of techniques, including polarimetry, inductively coupled plasma optical emission spectrometry, elemental analysis, thermogravimetric analysis, differential scanning calorimetry, magnetic susceptibility measurements, and UV-vis, attenuated total reflection Fourier-transform infrared and Raman spectroscopies. Such experiments confirmed the structure of these new materials, as well as their appealing properties. The combination of a chiral moiety with a haloferrate anion within the IL structure allows the formation of very stable and multifunctional compounds with promising chiral, magnetic, optical and acidic properties. The resulting chiral iron-based ILs exhibit great potential for use in a range of applications such as enantioselective catalysis or chiral recognition, to name a few.

Graphical abstract: Synthesis of chiral iron-based ionic liquids: modelling stable hybrid materials

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Article information


Submitted
19 Jan 2020
Accepted
14 Mar 2020
First published
18 Mar 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Synthesis of chiral iron-based ionic liquids: modelling stable hybrid materials

C. Martin, I. Cano, F. Scé, R. Pérez-Aguirre, C. Gimbert-Suriñach, P. Lopez-Cornejo and I. de Pedro, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ00349B

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