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Hydrophobic ionic liquids

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13.12.2006

The invention at hand provides novel, very hydrophobic ionic liquids as well as methods for the production thereof.<p> These hydrophobic ionic liquids contain <ul><li>pentafluorophenyl imide ions as anions and <li>imidazolium ions, imidazolidinium ions, benzimidazolidinium ions, N-organo-pyridinium ions, quaternary ammonium ions, phosphonium ions or guanidinium ions as cations.</ul><p> The novel pentafluorophenyl imide anions contain a pentafluorophenyl group and another aliphatic or aromatic group which may be entirely or partly fluorinated.<p> When applied, the purity of ionic liquids is very important. Impurities within ionic liquids may, for instance, negatively influence the characteristics of chemical reactions.<p> The method according to the present invention avoids such impurities. It allows for the introduction of the anion via a quantitative chemical reaction instead of a mere equilibrium shift during ion exchange.

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