Synthesis, characterization, and metal-ion binding properties of a new macrobicyclic ligand with dioxadiazaoctathia donor atoms

In this study, a new macrobicyclic ligand 3 with mixed donor atoms was synthesized starting from 27-membered macrocycle ligand 1 via the formation of novel N-pivot lariat ether 2. The characterization of the structures of new compounds 2 and 3 was realized by several spectroscopic techniques such as ¹H NMR, ¹³C NMR, IR, UV-Vis, and MS. Besides, the extraction ability of ligands 2 and 3 was investigated using liquid-liquid extraction. On considering the extraction, the highest efficiency was observed for Ag(I) ion by 95.3% and 96.9% to the dichloromethane and chloroform phase with macrobicyclic ligand 3, respectively.