共查询到18条相似文献,搜索用时 93 毫秒
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通过两个不同的平台合成了一系列结构新颖的硫杂杯[4]芳烃衍生物,阳离子萃取试验表明该硫杂杯[4]芳烃衍生物比含有相似官能团的杯[4]芳烃衍生物具有更好的软金属离子萃取性能,新化合物的结构经IR, 1H NMR,MS和元素分析等证实. 相似文献
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气相色谱研究杯[4]芳烃衍生物 总被引:3,自引:0,他引:3
选取两种不同结构的怀「4」芳烃做固定相,研究了烃基取代苯,不同数目的甲基取代苯,稠环芳烃和醇系列化合物的保留值变化规律;讨论了杯「4」芳烃固定相与溶质分子间的弥散力作用,氢键作用及空间适应性;指出杯「4」芳烃对芳香烃等良好选择性;对乙腈和甲醇等小分子似有包结。 相似文献
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新型杯[4]芳烃衍生物的合成 总被引:1,自引:0,他引:1
以对叔丁基杯[4]芳烃为起始原料,通过一步或两步取代反应合成了对叔丁基杯[4]芳烃的衍生物(1和2),其结构经FT-IR,^1H NMR,FAB-MS表征. 相似文献
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A series of calixarene derivatives 2―5 containing heteroatom at the lower rim have been synthesized. 1H NMR studies and crystallographic structures demonstrated that the calix[4]arene derivatives adopted cone conformations. Their cationic binding abilities and selectivities towards heavy and tran- sition metal ions have been evaluated by solvent extraction of aqueous metal picrates. The obtained results indicated that the introduction of nitrogen, sulfur, and/or phosphor atoms to the calix[4]arene framework could effectively enhance their binding ability and selectivity for heavy and transition metal ions, such as Pb2 or Ag . 相似文献
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在丙酮溶液中以碳酸铯为催化剂,以硫代杯[8]芳烃(thiacalix[8]arene,TC8A)和N,N-二乙基-2-氯乙酰胺为底物,对TC8A的下缘进行修饰合成了一种新的TC8A衍生物--硫代杯[8]芳烃二乙基乙酰胺[TC8A-CH2CON(CH2CH3)2].对含有9种金属离子的汽车尾气净化催化剂溶液进行萃取研究表明,在pH为3.0的萃取液中TC8A对其中的钯离子具有最高的选择性萃取能力,萃取率可达99.3%,TC8A-CH2CON(CH2CH3)2对其中的锆离子具有最高的选择性识别能力,萃取率可达96.7%. 相似文献
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GU Shao-Jin QIN Da-Bin JIN Lin-Hai 《结构化学》2008,27(9):1035-1038
The title complex (C50H44C14O8) was synthesized and structurally determined by single-crystal X-ray diffraction method. It crystallizes in monoclinic, space group P21/n with a = 19.7768(4), b =10.2085(2), c = 21.2721(4)A,β= 97.153(1)°, V = 4261.23(14)A^3, Z = 4, Mr = 914.65, F(000) = 1904, Dc = 1.426 g/cm^3,μ = 0.336, the final R = 0.0550 and wR = 0.1647. The compound was structurally characterized by IR and ^1H NMR. The molecules are stacked through C-H...π interactions and intermolecular C-H...O hydrogen bonds. 相似文献