1-Alkyl-3-methylimidazolium alkanesulfonate ionic liquids, [CnH2n+1mim][CkH2k+1SO3]: synthesis and physicochemical properties
作者:Marijana Blesic、Małgorzata Swadźba-Kwaśny、Tayeb Belhocine、H. Q. Nimal Gunaratne、José N. Canongia Lopes、Margarida F. Costa Gomes、Agílio A. H. Pádua、Kenneth R. Seddon、Luís Paulo N. Rebelo
DOI:10.1039/b910177m
日期:——
A set of 1-alkyl-3-methylimidazolium alkanesulfonate ionic liquids, [Cnmim][CkSO3], formed by the variation of the alkyl chain lengths both in the cation and the anion (n = 1–6, 8, or 10; k = 1–4, or 6), was synthesised, with sixteen of them being novel. The ionic liquids were characterised by 1H and 13C NMR spectroscopy, and mass spectrometry. Their viscosities and densities as a function of temperature, as well as melting points and decomposition temperatures, were determined. The molecular volumes, both experimental and calculated, were found to depend linearly on the sum (n + k).
合成了一系列1-烷基-3-甲基咪唑硫酸烷基酯离子液体[Cnmim][CkSO3],其中阳离子和阴子的烷基链长度均可变(n = 1-6,8 或 10;k = 1-4 或 6),其中有16种为新型离子液体。通过1H和13C核磁共振波谱学以及质谱分析表征了这些离子液体。测定了它们的粘度和密度随温度变化的函数关系、熔点和分解温度。无论是实验测得的分子体积还是计算得出的,都发现与烷基链长度之和(n + k)呈线性相关。