title: [Studies on the anion recognition of N-aryl-N'-(4-ethyloxybenzoyl) thioureas derivatives by spectroscopy].
abstract: The interactions of N-aryl-N'-(4-ethyloxybenzoyl) thioureas derivatives and anions such as F-, Cl-, Br-, I-, CH3COO-, H2POT4-, HSO4- and NO3- in DMSO were investigated by UV-Vis and 1H 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.
authors.affiliation: School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China. hujinghan62@163.com
authors.forename: Jing-Han
authors.initials: JH
authors.lastname: Hu
authors.forename: Wei-Xia
authors.initials: WX
authors.lastname: Xu
authors.forename: Tai-Bao
authors.initials: TB
authors.lastname: Wei