Designing ionic liquids with boron cluster anions:: alkylpyridinium and imidazolium [nido-C2B9H11] and [closo-CB11H12] carborane salts
Designing ionic liquids with boron cluster anions:: alkylpyridinium and imidazolium [nido-C2B9H11] and [closo-CB11H12] carborane salts
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DOI：
10.1039/b802374c
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发表时间：
2008-01-01
影响因子：
4
通讯作者：
Larsen, Anna S.
中科院分区：
文献类型：
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作者：
Dymon, John;Wibby, Ryan;Larsen, Anna S.
一系列具有[nido-C2B9H12](-)、[closo-CB11H12](-)和[RC2B11H11](-)（R =甲基或丁基）阴离子的新型烷基吡啶鎓和咪唑鎓碳硼烷盐已通过物理和热方法制备和表征，包括通过单晶X射线衍射测定的其中五种盐的固态结构。已经评估了盐形成低熔点离子液体的倾向；所有用[nido-C2B9H12](-)阴离子研究的盐都在100摄氏度以下熔化，并且显着的是，其熔点比相应的[closo-CB11H12](-)类似物低25-85摄氏度，这表明可以容易地获得更广泛的富含硼的离子液体材料。
A range of new alkylpyridinium and imidazolium carborane salts with [nido-C2B9H12](-), [closo-CB11H12](-), and [RC2B11H11](-) (R = methyl or butyl) anions have been prepared and characterized by physical and thermal methods, including the solid state structures of five of the salts determined by single crystal X-ray diffraction. The tendency of the salts to form low-melting ionic liquids has been assessed; all the salts studied with [nido-C2B9H12](-) anions melted below 100 degrees C and, significantly, have melting points that are 25-85 degrees C lower than those of the corresponding [closo-CB11H12](-) analogs, demonstrating that a wider range of boron-rich ionic liquid materials can be readily accessed.