18457-04-0Relevant articles and documents
Chloride-free method to synthesise new ionic liquids with mixed borate anions
Schreiner, Christian,Amereller, Marius,Gores, Heiner J.
, p. 2270 - 2272 (2009)
A new chloride-free method to synthesize ionic liquids (ILs) with mixed borate anions was demonstrated. The anions used for the study were derived from [BF4]- by replacement of F- by mono- or bidentate ligands. The proposed method was depended on the type of ligand, while moisture exclusion and dried starting materials and solvent were used to minimize water content. The starting materials were heated to reflux in acetonitrile (MeCN) as solvent for monodentate ligands. The [BF 4]- compounds were diluted in MeCN to prevent the formation of bridged anions and the trime-thylsilyl compounds were added at a temperature of 45 °C. The proposed method opened new opportunities for preparing new ILs for different applications including their use as electrolytes in electrochemical double layer capacitors and lithium ion batteries.
Synthesis of trimethylsilyl carboxylates by HMDS under solvent-free conditions
Jereb, Marjan,Lakner, Janja
, p. 5713 - 5723 (2016/08/23)
A broad set of structurally different carboxylic acids were transformed into their trimethylsilyl esters with HMDS in a practically completely solvent-free process, while a catalytic amount of iodine was required in some cases. The process has several advantages over the known methods: untreated reactants, air atmosphere, mild and neutral conditions, no evolution of hydrogen halide, no need of an additional base, low amount of waste, completely without chromatography, low consumption of energy, and operational simplicity.
Electrolytic salts for lithium batteries
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Page 3, (2008/06/13)
Orthoborate salts suitable for use as electrolytes in lithium batteries and methods for making the electrolyte salts are provided. The electrolytic salts have one of the formulae (I). In this formula anionic orthoborate groups are capped with two bidentate chelating groups, Y1 and Y2. Certain preferred chelating groups are dibasic acid residues, most preferably oxalyl, malonyl and succinyl, disulfonic acid residues, sulfoacetic acid residues and halo-substituted alkylenes. The salts are soluble in non-aqueous solvents and polymeric gels and are useful components of lithium batteries in electrochemical devices.
