Abstract
Synthesis and characterization of mono and polyfluoroalkyl-substituted imidazolium quaternary salts and ionic liquids are reported. Reactions of 1-methylimidazole or 1-butylimidazole with an excess of polyfluoroalkyl halides at 80 °C under neat conditions produced the quaternary salts. Similarly, sodium imidazolate with an excess of polyfluoroalkyl halides also gave quaternary salts. Metathesis reactions of quaternary salts with KPF 6 , LiN(SO 2 CF 3 ) 2 and KSO 3 CF 3 in water gave ionic liquid products in good yields. All new compounds were characterized from 1 H, 1 9 F, and 1 3 C NMR, IR, and MS spectra, and elemental analyses. DSC was used to determine melting points. Densities of the room temperature liquids fall between 1.44-1.85 g/cm 3 . The X-ray structure of 3f was obtained.
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