Synthesis and Properties of Alkoxy- and Alkenyl-Substituted Peralkylated Imidazolium Ionic Liquids
作者:Cedric Maton、Neil R. Brooks、Luc Van Meervelt、Koen Binnemans、Stijn Schaltin、Jan Fransaer、Christian V. Stevens
DOI:10.1002/cphc.201300611
日期:2013.10.21
Novel peralkylated imidazolium ionic liquids bearing alkoxy and/or alkenyl side chains have been synthesized and studied. Different synthetic routes towards the imidazoles and the ionic liquids comprising bromide, iodide, methanesulfonate, bis(trifluoromethylsulfonyl)imide ([NTf2]−), and dicyanamide [N(CN)2]−} as the anion were evaluated, and this led to a library of analogues, for which the melting
已经合成并研究了带有烷氧基和/或烯基侧链的新型全烷基化咪唑鎓离子液体。对咪唑和包含溴化物,碘化物,甲磺酸盐,双(三氟甲基磺酰基)酰亚胺([NTf 2 ] -)和双氰胺[N(CN)2 ] -)的离子液体的合成路线进行了评估,并对此进行了评估。产生了一个类似物库,可确定该类似物的熔点,粘度和电化学窗口。除了具有高对称性的阳离子外,烯基部分的结合阻碍了固化。烷氧基衍生的离子液体通常是结晶的。然而,室温离子液体(RTILs)是与弱配位阴离子[NTf2 ] -和[N(CN)2 ] -。对于全烷基化RTIL的粘度,发现了相反的趋势,即烷氧基衍生物的粘度低于其烯基取代的类似物。在结晶化合物中,记录了X射线衍射数据并与它们的分子特性有关。烷氧基取代后,发现电化学阴极极限电势更正,而烯基取代的咪唑鎓盐的整个电化学窗口移到了更高的正电势。