两种基于哌嗪阳离子的磺酸功能化离子液体的合成及其结构表征和物理性质测定

摘要

以哌嗪、1，4-丁磺酸内酯及硫酸或磷酸为原料，合成了两种基于哌嗪阳离子的磺酸功能化酸性离子液体硫酸氢盐（[（HSO3-b）2 pi]2＋·2[HSO4]-）和1，4-二（4-磺酸基丁基）哌嗪磷酸二氢盐（[（HSO3-b）2 pi]2＋·2[H2 PO4]-）；利用傅立叶变换红外光谱、核磁共振氢谱和碳谱表征了两种产物的结构，并测定了其熔点、黏度、电导率、热稳定性等物理性质。%Two kinds of bi-HSO3-functionalized ionic liquids based on piperazinum cation ,in-cluding 1 ,4-bis (4-sulfobutyl)piperazinum bis (hydrogen sulfate) coded as ([(HSO3-b)2 pi] [HSO4 ]2 ) and 1 ,4-bis(4-sulfobutyl) piperazinum bis(dihydrogen phosphate) coded as (HSO3-b)2 pi][H2 PO4 ]2 ) ,were synthesized with piperazine and 1 ,4-butane sultone as well as H2 SO4 or H3 PO4 as raw materials .The structure of as-synthesized products was confirmed by Fourier transform infrared spectrometry and nuclear magnetic resonance spectrometry (1 H NM R and 13C NMR);and their physical properties such as melting point ,viscosity in water ,electrical conductivity in water and ethanol ,and thermal stability were determined .