ANYL 70 |
| A group of ionic liquids composed of either chiral anions and nonchiral cations or both chiral anions and chiral cations were synthesized in a simple one-pot reaction. The chiral anions are various chelated orthoborates and the cations are either 1-butyl-3-methylimidazolium or 1-ethyl-3-methylimidazolium or 1-methyl-3-[(2S)-2-methylbutyl]-imidazolium. 11 pairs of these ionic liquids are liquid at room temperature and 4 of them are solid. These ionic liquids stable up to 250 ºC and their glass transition temperature ranges from –70.4 °C to -0.53ºC. Crystals of two of the solid ionic liquids were obtained and studied with X-Ray crystallography and indicates that the domination forces for the crystal packing are C-H•••O hydrogen bonds between the chiral anions and cations. NMR study shows that the chiral anions have good chiral selectivity ability on racemic cations of 1-methyl-3-(2-methylbutyl)-imidazolium and different selectivity abilities were observed for different anions in different solvents. |
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General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Analytical Chemistry |