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

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.

 Authorship: Martin C., Cano I., Scé F., Pérez-Aguirre R., Gimbert-Suriñach C., Lopez-Cornejo P., De Pedro I.,

 Fuente: New Journal of Chemistry, 2020, 44(16), 6375-6383

 Publisher: Royal Society of Chemistry

 Year of publication: 2020

 No. of pages: 9

 Publication type: Article

 DOI: 10.1039/d0nj00349b

 ISSN: 1144-0546,1369-9261

 Spanish project: MAT2017-83631-C3-3-R

 Publication Url: https://doi.org/10.1039/D0NJ00349B

Authorship

MARIA DEL CARMEN MARTIN GANDUL

CANO, ISRAEL

FABIO SCE NATALE

PÉREZ-AGUIRRE, RUBÉN

GIMBERT-SURIÑACH, CAROLINA

LÓPEZ-CORNEJO, PILAR