Journal
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
Volume 27, Issue 6, Pages 498-503Publisher
WILEY
DOI: 10.1002/poc.3291
Keywords
1-vinyl-3-alkylimidazolium; magnetic ionic liquids; physicochemical properties; tetrahalogenidoferrate
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Funding
- National Natural Science Foundation of China [21174111]
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Using microwave-assisted synthesis method, a series of paramagnetic ionic liquids comprising 1-vinyl-3-alkylimidazolium VRIM+ cation and tetrahalogenidoferrate (III) FeClmBr4-m- anion were designed and synthesized. The structure was analyzed using H-1 NMR and Raman spectroscopy. Ultraviolet-visible absorption spectra, thermal stability, magnetic susceptibility, viscosity, ionic conductivity, and solubility were characterized. Results show that elongation of the alkyl chain leads to replacement of bromides with a small amount of chlorides in the anion, shifting of UV maximum absorption peaks to shorter wavelengths, reduction of ionic conductivity, and solubility in polar solvents, as well as increase in fluidity, magnetic susceptibility, and solubility in nonpolar solvents. Copyright (c) 2014 John Wiley & Sons, Ltd.
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