New heavy metal ion-selective macrocyclic ligands with nitrogen and sulfur donor atoms and their extractant properties


Alp H. , BIYIKHOGLU Z. , Ocak M. , Ocak U. , Kantekin H. , Dilber G.

SEPARATION SCIENCE AND TECHNOLOGY, vol.42, no.4, pp.835-845, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 4
  • Publication Date: 2007
  • Doi Number: 10.1080/01496390601174000
  • Title of Journal : SEPARATION SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.835-845

Abstract

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+, Hg2+, Cd2+, Zn2+, Cu2+, Ni2+, Mn2+, CO2+ and Pb2+ from aqueous phase to the organic phase. The metal picrate extractions were investigated at 25 +/- 0.1 degrees 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.