Studies on the anion recognition of N-Aryl-N'-(4-Ethyloxybenzoyl) thioureas derivatives by Spectroscopy

被引:0
|
作者
Hu Jing-han [1 ]
Xu Wei-xia
Wei Tai-bao
机构
[1] Lanzhou Jiaotong Univ, Sch Chem & Biol Engn, Lanzhou 730070, Peoples R China
[2] NW Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
关键词
thiourea; UV-Vis spectroscopy; anion recognition;
D O I
暂无
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
The interactions of N-aryl-N'-(4-ethyloxybenzoyl) thioureas derivatives and anions such as F-, Cl-, Br-, I-, CH3COO-, H2PO4-, HSO4- and NO3- in DMSO were investigated by UV-Vis and H-1 NMR spectroscopy. The results showed that hydrogen-bonding complexes were formed between receptors and the three anions such as F-, CH3COO- and H2PO4, and the solutions turned light yellow from colorlessness, but there had no evident binding with Cl-, Br-, I-, HSO4- and NO3-. It was regular that the two receptors had different binding ability with F-, CH3COO- and H2PO4-. For the same anion, the association constants followed the trend: receptor 1a> receptor 1b. The UV-Vis data indicated that a 1 : 1 stoichiometry complex was formed.
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页码:1172 / 1175
页数:4
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