Lattice and phase transition thermodynamics of ionic liquids
Lattice and phase transition thermodynamics of ionic liquids
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DOI：
10.1016/j.tca.2004.03.015
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发表时间：
2004-11-01
影响因子：
3.5
通讯作者：
Glasser, L
中科院分区：
文献类型：
--
作者：
Glasser, L
的热力学系统的形成和相变的范围内形成离子液体的材料进行检查，根据实验值的密度和量热。某些结果被证明是一致的，这些材料的组，即：晶格势能随烷基链长度的增加而降低;分子体积和“总相变”熵（从晶体通过液晶相熔融）线性增加与烷基链长度为吡啶阳离子。然而，总的相变过渡熵为两个1-烷基-3-甲基咪唑阳离子系统检查是异常的，具有圆顶形的图表，在C-14附近的值下降。(C)2004 Elsevier B. V.保留所有权利。
The thermodynamic systematics of the formation and phase changes of a range of materials which form ionic liquids is examined, based upon experimental values of densities and calorimetric quantities. Certain results are shown to be consistent across groups of these materials, namely: the lattice potential energies decrease with increasing alkyl chain length; the molecular volumes and 'total phase change' entropies (from crystal through liquid crystalline phases to melt) increase linearly with alkyl group chain length for pyridinium cations. However, the total phase change transition entropies for the two 1-alkyl-3-methylimidazolium cation systems examined are anomalous, having dome-shaped graphs with a dip in value around C-14. (C) 2004 Elsevier B.V. All rights reserved.