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Microheterogeneity in imidazolium and piperidinium cation-based ionic liquids: 1D and 2D NMR studies

Panja, Sumit Kumar and Saha, Satyen (2018) Microheterogeneity in imidazolium and piperidinium cation-based ionic liquids: 1D and 2D NMR studies. In: MAGNETIC RESONANCE IN CHEMISTRY, 56 (2, SI). pp. 95-102.

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Official URL: http://dx.doi.org/10.1002/mrc.4610

Abstract

Existence of microheterogeneity of imidazolium and piperidinium cation-based ionic liquids (ILs) containing PF6 and NTf2 anions has been investigated by 1D and 2D NMR spectroscopy. 2D NMR (especially NOESY and HOESY) has been employed for studying the interactions present between cation and anion as well as the intermolecular interaction among cations. HOESY spectrum shows that fluorine of anion (PF6- and NTf2-) significantly interacts with proton of the cations. Combined results of HOESY and NOESY for imidazolium IL indicate that the PF6- and imidazolium cation are distributed in organized manner, resulting a heterogeneous environment in liquid state. We have also observed existence of heterogeneous environment for piperidinium cation-based ILs which is different from imidazolium ILs. It appears that existence of microheterogeneity in IL is ubiquitous and therefore open up the ILs field to revisit. Copyright (C) 2017 John Wiley & Sons, Ltd.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WILEY, 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 25 Jan 2018 09:41
Last Modified: 25 Jan 2018 09:41
URI: http://eprints.iisc.ac.in/id/eprint/58851

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