1,3-Bis(2′-hydroxyethyl)imidazolium ionic liquids: correlating structure and properties with anion hydrogen bonding ability
作者:Feng Deng、Zachary K. Reeder、Kevin M. Miller
DOI:10.1002/poc.3198
日期:2014.1
series of 1,3‐bis(2′‐hydroxyethyl)imidazolium ionic liquids is reported where 1H NMR chemical shift values and thermal stabilities (Td), as determined by thermogravimetric analysis, are correlated with the hydrogen bonding capability of various anions ([Cl−], [Br−], [CF3CO2−], [NO2−], [MsO−], [NO3−], [TfO−], [BF4−], [NTf2−], and [PF6−]). Use of anions with the strongest hydrogen bonding capability, such
据报道,有一系列的1,3-双(2'-羟乙基)咪唑鎓离子液体,其中通过热重分析确定的1 H NMR化学位移值和热稳定性(T d)与各种阴离子的氢键能力相关([Cl - ],[Br - ],[CF 3 CO 2 - ],[NO 2 - ],[MsO - ],[NO 3 - ],[TfO - ],[BF 4 - ],[NTf 2 - ]和[PF 6 -])。具有最强的氢键能力的阴离子,如氯离子[氯的使用- ,溴化物[BR] - ],和三氟乙酸盐[CF 3 CO 2 - ],导致了最远的观察到的低磁场的化学位移值在DMSO-d 6和最差的热稳定性([CF 3 CO 2 - ] <200℃)。观察到对于离子液体,其采用的弱配位三氟甲磺酸酯[光学传递函数超过350℃和高磁场的化学位移值热稳定性- ],四氟硼酸根[BF 4 - ],双(三氟甲基磺酰)亚胺[NTF 2 -]阴离子。通过B3LYP / 6-31G