Synthesis, characterization and extraction properties of calix[4]crown with amine units and study of its complexes with Cu(II)

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• 作者：Sara Hosseinpour ; Behrouz Shaabani…
• 关键词：Calix[4]arene ; Cupper(II) complexes ; Extraction ; Cyclic voltammetry
• 刊名：Journal of Inclusion Phenomena and Macrocyclic Chemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：87
• 期：1-2
• 页码：75-83
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Organic Chemistry; Food Science; Crystallography and Scattering Methods;
• 出版者：Springer Netherlands
• ISSN：1573-1111
• 卷排序：87

文摘

In this work, we have focused on the synthesis of p-tert-butyl calix[4]crown with amine units (H₃L) as a class of selective receptors for metal ions. The macrocyclic ligand (H₃L) with N₂O₇ donors was synthesized via condensation between 1,3-diaminocalix[4]arene and 2-[3-(2-formylphenoxy)-2-hydroxypropoxy] benzaldehyde, followed by reduction of the Schiff base product in situ with sodium borohydride, then it was characterized by FT-IR, 1H NMR and X-ray crystallography. Two Cu(II) complexes were prepared from the reaction of H₃L with Cu(II) salts (CuX₂, X = ClO₄− and Cl−). FT-IR, UV–Vis, elemental analysis, molar conductivity and cyclic voltammetry techniques were used for study and characterization of these complexes. On the basis of liquid–liquid extraction experiments, ligand H₃L indicated good affinity toward Pb2+ and Cu2+.