New Heavy Metal Ion-Selective Macrocyclic Ligands with Nitrogen and Sulfur Donor Atoms and their Extractant Properties

Two new macrocyclic ligands, containing nitrogen and sulfur donor atoms were designed and synthesized in a multi-step reaction sequence. The macrocycles with amide group were used in solvent extraction of picrates of metals such as Ag + , Hg 2+ , Cd 2+ , Zn 2+ , Cu 2+ , Ni 2+ , Mn 2+ , Co 2+ and Pb...

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Bibliographic Details
Published in:Separation science and technology 2007-03, Vol.42 (4), p.835-845
Main Authors: Alp, Hakan, Bıyıklıoğlu, Zekeriya, Ocak, Miraç, Ocak, Ümmühan, Kantekin, Halit, Dilber, Gülsev
Format: Article
Language:English
Subjects:
Mixed donor atom
solvent extraction
transition metal cation
UV-visible spectrometry
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Summary:Two new macrocyclic ligands, containing nitrogen and sulfur donor atoms were designed and synthesized in a multi-step reaction sequence. The macrocycles with amide group were used in solvent extraction of picrates of metals such as Ag + , Hg 2+ , Cd 2+ , Zn 2+ , Cu 2+ , Ni 2+ , Mn 2+ , Co 2+ and Pb 2+ from aqueous phase to the organic phase. The metal picrate extractions were investigated at 25±0.1°C by using UV-visible spectrometry. The extractability and selectivity of the mentioned metal picrates were evaluated according to the organic solvents. The values of the extraction constants (log K ex ) and the complex compositions were determined for the extracted complexes.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496390601174000