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 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 4
  • Publication Date: 2007
  • Doi Number: 10.1080/01496390601174000
  • Journal Name: SEPARATION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.835-845
  • Karadeniz Technical University Affiliated: Yes

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.