A Hybrid Lithium Oxalate−Phosphinate Salt

The novel organophosphorus-containing lithium salt Li(THF)[(C2O4)B(O2PPh2)2] (1; THF = tetrahydrofuran) was synthesized and characterized using a variety of spectroscopic techniques. An X-ray structural analysis on crystals of 1 grown from THF reveals a dimeric structure [Li(THF)(C2O4)B(O2PPh2)2]2·THF, whereby the two units of 1 are bridged via P−O···Li interactions. Compound 1 displays high air and water stability and is also thermally robust, properties needed of electrolytes for their possible use as electrolytes and/or additives in lithium-ion battery applications.

本研究合成并通过多种光谱技术表征了一种新型含有机磷锂盐Li(THF)[(C2O4)B(O2PPh2)2]（化合物1；其中THF为四氢呋喃（tetrahydrofuran））。对从四氢呋喃体系中培养得到的化合物1单晶进行X射线结构分析后发现，其呈现二聚体结构[Li(THF)(C2O4)B(O2PPh2)2]₂·THF，两个化合物1单元通过P-O···Li相互作用实现桥连。化合物1兼具优异的空气与水稳定性及突出的热稳定性，具备用作锂离子电池电解质或添加剂所需的核心性能。