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Synthesis, structural analysis, electrochemical and magnetic properties of tetrachloroferrate ionic liquids

Zafar, A; Din, I; Ahmed, S; Bučar, D-K; Tahir, MN; Palgrave, RG; (2021) Synthesis, structural analysis, electrochemical and magnetic properties of tetrachloroferrate ionic liquids. New Journal of Chemistry , 45 (30) pp. 13429-13440. 10.1039/D1NJ01400E. Green open access

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Abstract

Eight ionic liquids have been synthesized with the tetrachloroferrate anion and varying cations with the general formula of [RA]+[FeCl4]− (R = –CH3, –CH2C6H5; A = pyridine, benzimidazole, trimethylamine, triphenylphosphine). They were characterized using spectroscopic techniques such as FT-IR, ESI-MS, Raman, and AAS along with single-crystal XRD to validate their structural motifs. The ionic conductivity, electrochemical and magnetic properties were determined to assess their possible uses in synthesis, separation, magnetic and transportation technologies, and high-energy capacitors. The diffusion coefficient value for these compounds was calculated to be around 7.55 × 10−8 cm2 s−1 and the heterogeneous rate constant value is about 3.60 × 10−3 cm s−1, which quantitatively complemented not only quasi reversibility but also moderately fast electron transfer processes. The effective magnetic moment values for the ionic liquids were determined to be similar to that expected from the spin-only approximation.

Type: Article
Title: Synthesis, structural analysis, electrochemical and magnetic properties of tetrachloroferrate ionic liquids
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/D1NJ01400E
Publisher version: https://doi.org/10.1039/D1NJ01400E
Language: English
Additional information: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence (http://creativecommons.org/licenses/by-nc/3.0/).
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery-pp.ucl.ac.uk/id/eprint/10130082
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