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Z. Naturforsch. 2013,
68b, 1095 – 1102
doi:10.5560/ZNB.2013-3138
Ionic Liquids Based on Hexachloridometalate(V) Anions (Sb, Nb and Ta) and Nitrile-functionalized Pyridinium Cations
Institut für Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Str. 4, D-38678 Clausthal-Zellerfeld, Germany
Reprint requests to PD Dr. Mimoza Gjikaj. Fax: (+49)5323 722995. E-mail:
mimoza.gjikaj@tu-clausthal.de
Received May 29, 2013 / published online October 4, 2013
Single crystals of 1-(cyanoethyl)-3-methyl-pyridin-1-ium hexachloridoantimonate(V) (1), 1-(cyanomethyl)-3-methyl-pyridin-1-ium hexachloridoniobate(V) (2), 1-(cyanomethyl)-3-methyl-pyridin-1-ium hexachloridotantalate(V) (3), 1-(cyanopropyl)-3-methyl-pyridin-1-ium hexachlorido- niobate(V) (4), and 1-(cyanopropyl)-3-methyl-pyridin-1-ium hexachloridotantalate(V) (5) have been synthesized and characterized by X-ray diffraction. Compounds 1–3 crystallize in the triclinic space group P1̅ with Z = 2, and compounds 4 and 5 in the monoclinic space group C2/c with Z = 8. FT-Raman spectra have been recorded and interpreted, especially with respect to the anions [MCl6]−. In addition, NMR spectra,
a study of the melting behavior and elemental analyses complete the characterization.
Key words: Ionic Liquids, [SbCl6]−, [NbCl6]−, [TaCl6]−, Crystal Structure, Raman Spectroscopy