- A simple halide-to-anion exchange method for heteroaromatic salts and ionic liquids
-
A broad and simple method permitted halide ions in quaternary heteroaromatic and ammonium salts to be exchanged for a variety of anions using an anion exchange resin (A- form) in non-aqueous media. The anion loading of the AER (OH- form) was examined using two different anion sources, acids or ammonium salts, and changing the polarity of the solvents. The AER (A- form) method in organic solvents was then applied to several quaternary heteroaromatic salts and ILs, and the anion exchange proceeded in excellent to quantitative yields, concomitantly removing halide impurities. Relying on the hydrophobicity of the targeted ion pair for the counteranion swap, organic solvents with variable polarity were used, such as CH3OH, CH3CN and the dipolar nonhydroxylic solvent mixture CH3CN:CH2Cl 2 (3:7) and the anion exchange was equally successful with both lipophilic cations and anions.
- Alcalde, Ermitas,Dinares, Immaculada,Ibanez, Anna,Mesquida, Neus
-
experimental part
p. 4007 - 4027
(2012/07/28)
-
- Surfactant properties of ionic liquids containing short alkyl chain imidazolium cations and ibuprofenate anions
-
Interfacial tension, electrical conductivity, NMR self-diffusion and DLS experiments have been used to investigate the self-aggregation in water of ionic liquids associating an ibuprofenate anion and 1-alkyl-3-methylimidazolium [CnMIm]+/s
- Tourne-Peteilh, Corine,Devoisselle, Jean-Marie,Vioux, Andre,Judeinstein, Patrick,In, Martin,Viau, Lydie
-
experimental part
p. 15523 - 15529
(2012/01/14)
-
- A general halide-to-anion switch for imidazolium-based ionic liquids and oligocationic systems using anion exchange resins (A- form)
-
Further studies on the application of an AER (A- form) method broadened the anion exchange scope of representative ionic liquids and bis(imidazolium) systems. Depending on the hydrophobicity nature of the targeted imidazolium species and counte
- Alcalde, Ermitas,Dinares, Immaculada,Ibanez, Anna,Mesquida, Neus
-
supporting information; scheme or table
p. 3266 - 3268
(2011/05/30)
-