LITHIUM SALTS OF PENTAFLUOROPHENYLAMIDE ANIONS, PREPARATION THEREOF AND USE THEREOF
申请人:Sundermeyer Jorg
公开号:US20120245387A1
公开(公告)日:2012-09-27
The present invention provides new lithium salts comprising pentafluorophenylamide anions following the general formula Li
+
[N(SO
2
—R)(C
6
F
5
)]
−
, which are optionally present as solvent-free complexes. R is hereby selected from fluorine, linear or branched acyclic or cyclic alkyl groups with 1 to 20 carbon atoms which are not fluorinated, partially fluorinated or fully fluorinated; or not fluorinated, partially fluorinated or fully fluorinated aryl or benzyl groups with 1 to 20 carbon atoms. The lithium salts according to the present invention are produced by reacting the corresponding NH acid of the pentafluorophenylamide with one equivalent of lithium bis(trimethylsilyl)amide or lithium organyl, wherein the reaction is carried out advantageously in the presence of apolar aprotic solvents. In this way, lithium salts in the form of solvent-free complexes are obtained. These solvent-free lithium complexes are thermally, electrochemically and against oxidation stable and comprise a high ionic conductivity. The lithium salts according to the present invention are suitable to be used as ion-conducting materials, electrically conductive materials, dyes and in chemical catalysis. They are preferably used as ion-conducting electrolytes in lithium ion accumulators.
本发明提供了新的锂盐,包括五氟苯酰胺阴离子,其遵循以下一般公式Li + [N(SO2-R)(C6F5)]−,并且可以作为无溶剂配合物存在。其中,R从具有1到20个碳原子的不含氟、部分氟化或完全氟化的直链或支链脂肪族或环状烷基中选择;或不含氟、部分氟化或完全氟化的芳基或苄基中选择。根据本发明的锂盐是通过将五氟苯酰胺的相应NH酸与一当量的锂双(三甲基硅基)胺或锂有机基反应而制得的,其中反应优选在无极性无水溶剂的存在下进行。通过这种方式,获得了无溶剂配合物形式的锂盐。这些无溶剂锂配合物具有热稳定性、电化学稳定性和抗氧化稳定性,并具有高离子导电性。根据本发明的锂盐适用于用作离子导电材料、电导材料、染料和化学催化剂。它们优选用作锂离子积累器中的离子导电电解质。