4,13-Dithio benzene and-18-crown-6( DSB18C6) was synthesized by esterification, reduction and nucleophilic substitution reaction. The structural characterization was performed using proton nuclear magnetic resonance spectroscopy and X-ray single crystal diffraction, the selective binding to Ag+ was investigated by solvent extraction. The results show that DSB18C6 has a high selective extraction ability for Ag+ in the co-existence of Cu2+, Pb2+, Zn2+ and Ni2+ ions. The extraction efficiency of DSB18C6 to Ag+ was 95％.%以邻苯二酚为原料,经酯化、还原及亲核取代反应合成了4,13-二硫杂苯并-18-冠-6(DSB18C6);采用核磁共振氢谱(1 H NMR)和X射线单晶衍射分析对化合物进行了结构表征;采用溶剂萃取法考察了其银离子选择键合行为.结果表明,该类冠醚对Ag+表现出很高的萃取性能和选择性,在多种离子(Cu2+,Pb2+,Zn2+,Ni2+)共存的复杂体系中,DSB18C6对Ag+的萃取效率高达95％.
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