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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >New Guanidinium-based Room-temperature Ionic Liquids. Substituent and Anion Effect on Density and Solubility in Water
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New Guanidinium-based Room-temperature Ionic Liquids. Substituent and Anion Effect on Density and Solubility in Water

机译:基于胍基的新型室温离子液体。取代基和阴离子对水中密度和溶解度的影响

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摘要

In order to examine the influence of the alkyl chain length on some physical properties of guani-dinium salts, the synthesis of a homologous series of new N"-n-alkylsubstituted N,N-diethyl-N',N'di-n-propyl-N"-n-hexyl guanidinium ionic liquids (gILs), containing chloride (CI), tetrafluoroborate (BF_4), acesulfamate (Ace), saccharinate (Sac), and tosylate (Tos) as anions, is reported. C_n-gILAce, C_n-gILSac, and C_n-gILBF_4 were obtained by ion exchange reaction of the corresponding hexasub-stituted guanidinium chlorides (C_n-gCl, n = 3, 4, 6, 8, 10). which were synthesized by a quaterniza-tion reaction of the pentaalkyl-substituted guanidine 3 and the corresponding alkylchloride in DMF. The tosylates gILs C-gTos (n = 1, 2, 4, 6. 8, 10) were synthesized by alkylation of 3 with the corre-sponding alkyltosylates. Some physical properties, such as solubility in water and organic solvents, refractive index and density, are considered as a function of the length of the n-alkyl substituent R and the nature of the anion.
机译:为了研究烷基链长度对胍盐的某些物理性质的影响,合成了一系列新的N“ -n-烷基取代的N,N-二乙基-N',N'di-n-据报道,丙基-N”-正己基胍盐离子液体(gILs)含有氯离子(Cl),四氟硼酸根(BF_4),乙酰氨基磺酸酯(Ace),糖精(Sac)和甲苯磺酸根(Tos)作为阴离子。 C_n-gILAce,C_n-gILSac和C_n-gILBF_4通过相应的六取代的胍基氯化物(C_n-gCl,n = 3、4、6、8、10)的离子交换反应获得。它们是通过五烷基取代的胍3和相应的烷基氯化物在DMF中的季铵化反应合成的。甲苯磺酸盐gIL C-gTos(n = 1、2、4、6、8、10)是通过将3与相应的烷基甲苯磺酸盐烷基化而合成的。一些物理性质,例如在水和有机溶剂中的溶解度,折射率和密度,被认为是正烷基取代基R的长度和阴离子性质的函数。

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