Ethyl-, vinyl- and ethynylcyanoborates: room temperature borate ionic liquids with saturated and unsaturated
Nils Schopper1, Ludwig Zapf1, Jan A P Sprenger1
1Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Kataylse mit Bor (ICB), Am Hubland, Würzburg 97074, Germany. maik.finze@uni-wuerzburg.de.
Abstract:
Ethyl-, vinyl- and ethynyltricyano and dicyanofluoroborates were prepared on a gram scale from commercially available potassium trifluoroborates and trimethylsilylcyanide. Salt metathesis resulted in the corresponding EMIm-salts that are hydrophobic room-temperature ionic liquids (RTILs). The new RTILs exhibit unprecedented large electrochemical windows in combination with high thermal stabilities, low dynamic viscosities and high specific conductivities. These properties make them promising materials, especially for electrochemical applications.
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