Glyme-lithium bis(trifluoromethanesulfonyl)imide and glyme-lithium bis(perfluoroethanesulfonyl)imide phase behavior and solvate structures
Glyme-lithium bis(trifluoromethanesulfonyl)imide and glyme-lithium bis(perfluoroethanesulfonyl)imide phase behavior and solvate structures
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DOI：
10.1021/cm047881j
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发表时间：
2005-05-03
影响因子：
8.6
通讯作者：
Frech, R
中科院分区：
文献类型：
--
作者：
Henderson, WA;McKenna, F;Frech, R
已经确定了具有LiTFSI和LiBETI（TFSI- =双（三氟甲磺酰基）酰亚胺，BETI- =双（全氟乙磺酰基）酰亚胺）的甘醇二甲醚溶剂化物的晶体结构，包括（单甘醇二甲醚）（1）：LiBETI、（二甘醇二甲醚）（2）：LiTFSI、（二甘醇二甲醚）（1/2）：LiTFSI和低温（三甘醇二甲醚）：LiBETI。这些溶剂化物，与来自DSC分析的具有各种甘醇二甲醚的盐的相行为相结合，提供了对锂盐在通常用于固体聚合物和液体电解质的乙氧基溶剂中的分子相互作用的洞察。许多溶剂化物似乎经历有序-无序固相转变。这是首次报道的含有BETI-阴离子的晶体结构。
Crystal structures of glyme solvates with LiTFSI and LiBETI (TFSI- = bis(trifluoromethanesulfonyl)imide, BETI- = bis(perfluoroethanesulfonyl)imide) have been determined including (monoglyme)(1): LiBETI, (diglyme)(2):LiTFSI, (diglyme)(1/2):LiTFSI, and low-temperature (triglyme),:LiBETI. These solvates, combined with the phase behavior of the salts with various glymes from DSC analysis, provide insight into the molecular interactions of lithium salts in ethoxy solvents commonly used for solid polymer and liquid electrolytes. Many of the solvates appear to undergo order-disorder solid phase transitions. These are the first reported crystal structures containing the BETI- anion.