Ionic Liquids-New "Solutions" for Transition Metal Catalysis.
Peter Wasserscheid,Wilhelm Keim +1 more
5.7K
TL;DR: There are indications that switching from a normal organic solvent to an ionic liquid can lead to novel and unusual chemical reactivity, which opens up a wide field for future investigations into this new class of solvents in catalytic applications.
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Abstract: Ionic liquids are salts that are liquid at low temperature (<100 degrees C) which represent a new class of solvents with nonmolecular, ionic character. Even though the first representative has been known since 1914, ionic liquids have only been investigated as solvents for transition metal catalysis in the past ten years. Publications to date show that replacing an organic solvent by an ionic liquid can lead to remarkable improvements in well-known processes. Ionic liquids form biphasic systems with many organic product mixtures. This gives rise to the possibility of a multiphase reaction procedure with easy isolation and recovery of homogeneous catalysts. In addition, ionic liquids have practically no vapor pressure which facilitates product separation by distillation. There are also indications that switching from a normal organic solvent to an ionic liquid can lead to novel and unusual chemical reactivity. This opens up a wide field for future investigations into this new class of solvents in catalytic applications.
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Citations
Advanced Thermal Storage Fluids for Solar Parabolic Trough Systems
TL;DR: In this paper, the authors investigated the chemical and thermal properties of room temperature ionic liquids (RTILs) that hold much promise as a new class of heat transfer or storage fluids.
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Recent developments in the study of ionic liquid interfaces using X-ray photoelectron spectroscopy and potential future directions
TL;DR: A perspective is given on the potential of X-ray photoelectron spectroscopy to investigate ionic liquid (IL) interfaces and related bulk properties and detailed information on surface orientation, enrichment effects, cation-anion interactions, and the correlation to macroscopic properties such as density and surface tension of ILs are derived.
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Aggregation behavior of amino acid ionic liquid surfactants in aqueous media.
TL;DR: Self-aggregation of amino acid ionic liquid surfactants in aqueous solution has been investigated through surface tension, conductivity, steady-state fluorescence, dynamic light scattering, and transmission electron microscopy (TEM).
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Solubility of Ionic Liquid [emim][PF6] in Alcohols†
TL;DR: In this paper, the authors measured the solubility of 1-ethyl-3-methylimidazolium hexafluorophosphate, [emim][PF6], in alcohols.
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TL;DR: In this paper, a review compiles positively and negatively solvatochromic compounds which have been used to establish empirical scales of solvent polarity by means of UV/vis/near-IR spectroscopic measurements in solution.
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