title: Synthesis of High-Purity Imidazolium Tetrafluoroborates and Bis(oxalato)borates.
abstract: The synthesis and purification of imidazolium-based ionic liquids (ILs) with boron-containing anions is reported. The scope was the optimization of the meta thesis reaction and on the purification of the synthesized ILs. It was possible to reduce the reaction and purification times, to avoid the use of acetonitrile as processing solvent, and to increase the yield compared to the known procedure for [BOB]-anion-containing ILs. Furthermore, to the best of our knowledge the flashpoints of the ILs could be determined for the first time by the continuously closed-cup flashpoint (CCCFP) method.
authors.affiliation: Institute for Physical Chemistry, University Münster, Corrensstrasse 28/30, 48149, Münster, Germany.|MEET Battery Research Center, University Münster, Corrensstrasse 46, 48149, Münster, Germany.
authors.forename: Paulo
authors.initials: P
authors.lastname: Schmitz
authors.affiliation: Institute for Physical Chemistry, University Münster, Corrensstrasse 28/30, 48149, Münster, Germany.|MEET Battery Research Center, University Münster, Corrensstrasse 46, 48149, Münster, Germany.
authors.forename: Rene
authors.initials: R
authors.lastname: Jakelski
authors.affiliation: Institute for Physical Chemistry, University Münster, Corrensstrasse 28/30, 48149, Münster, Germany.|MEET Battery Research Center, University Münster, Corrensstrasse 46, 48149, Münster, Germany.
authors.forename: Kirsi
authors.initials: K
authors.lastname: Jalkanen
authors.affiliation: Institute for Physical Chemistry, University Münster, Corrensstrasse 28/30, 48149, Münster, Germany.|MEET Battery Research Center, University Münster, Corrensstrasse 46, 48149, Münster, Germany.|Helmholtz Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstrasse 46, 48149, Münster, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Winter
authors.affiliation: Institute for Physical Chemistry, University Münster, Corrensstrasse 28/30, 48149, Münster, Germany.|MEET Battery Research Center, University Münster, Corrensstrasse 46, 48149, Münster, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Bieker
keywords: borates; flashpoints; ionic liquids; room-temperature molten salts; synthetic methods