Synthesis, Microstructure and Volumetry of Novel Metal Thiocyanate Ionic Liquids With [BMIM] Cation
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Synthesis, Microstructure and Volumetry of Novel Metal Thiocyanate Ionic Liquids With [BMIM] CationAuthor(s)
Date
2019-03-17Citation
Oscar Cabeza, Luis M. Varela, Esther Rilo, Luisa Segade, Montserrat Domínguez-Pérez, David Ausín, Imanol de Pedro, Jesús Rodríguez Fernández, Jesús González, M. Pilar Vazquez-Tato, Yago Arosa, Elena López-Lago, Raúl de la Fuente, Juan J. Parajó, Josefa Salgado, María Villanueva, Vladimir Matveev, Alexandr Ievlev, Julio A. Seijas, Synthesis, microstructure and volumetry of novel metal thiocyanate ionic liquids with [BMIM] cation, Journal of Molecular Liquids, Volume 283, 2019, Pages 638-651, ISSN 0167-7322, https://doi.org/10.1016/j.molliq.2019.03.088. (https://www.sciencedirect.com/science/article/pii/S0167732219303721)
Abstract
[Abstract] We present a new family of ionic liquids (ILs) with a common cation, 1-butyl-3-methyl imidazolium, the popular [BMIM]+ (also written C4C1Im+) and a variety of anionic complexes (also called adducts) based in thiocyanate (SCN)−: one blank compound, BMIM(SCN), and ten doped with metals having different oxidation states: Al+3, Mn+2, Fe+3, Cr+3, Ni+2, Hg+2, Zn+2, Co+2, Cd+2 and Cu+, forming, respectively, [BMIM]3[Al(SCN)6], [BMIM]4 Mn(SCN)6, [BMIM]3 Fe(SCN)6, [BMIM]3 Cr(SCN)6, [BMIM]4 Ni(SCN)6, [BMIM]2 Hg(SCN)4, [BMIM]2 Zn(SCN)4, [BMIM]2 Co(SCN)4, [BMIM]2 Cd(SCN)4 and [BMIM]3 Cu(SCN)4. All of them were synthesized by us, except the blank IL and the Co thiocyanate, which are commercial. Obtained products have been characterized by NMR, and also by electrospray ionization, MS-ES, which allows the determination of the new ILs purities. Then, compounds have been analyzed using FT-IR and Raman spectroscopy. In addition, magnetic susceptibility and refractive index measurements were performed in some of the compounds studied, as well as thermal characterization using DSC and TGA. Finally, experimental measurements of density on all those ILs have been performed, and for some of the samples in a broad temperature range (about 100 K). In spite of being very similar compounds from the chemical point of view, they present quite different physical properties, including optical, thermal and magnetic ones… Also, they show different oxidation states (one with +1, six with +2 and other three with +3). We guess that this family of ILs will have interesting applications, mainly for photonic devices.
Keywords
Metal thiocyanates
Ionic liquids
Synthesis
Microstructure
Volumetry
Ionic liquids
Synthesis
Microstructure
Volumetry
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Atribución-NoComercial-SinDerivadas 4.0 Internacional
ISSN
0167-7322