Extraction and Binding Efficiency of Calixarene Derivative Toward Selected Transition Metals
In this article we have explored the extraction efficiency as well as binding ability of calixarene derivative (3) for selected transition metal ions (Co+2, Cd+2, Ni+2, Pb2+ and Cu2+). Picrate salt solutions of these metals were used in the liquid-liquid extraction experiments. It is apparent from the results that ligand 3 shows appreciable high extraction of transition metal cations, with the relative order Pb2+>Cu2+>Ni+2>Co+2>Cd+2 being observed. Highest extraction efficiency has been observed for Pb2+ and Cu2+ i.e. 95 and 91% respectively. The significant extraction and complexation ability for these metal ions may be attributed to the nature, size, structure and geometry of both ligand and metal ions.
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