Evaluation of a (E,E)-dioxime containing two 15-membered dioxatrithiamacrocycles and its mononuclear Ni(II) complex as Ag+ extractants

Alp H., Ocak M., OZDEMIR M., Ocak U.

SEPARATION SCIENCE AND TECHNOLOGY, vol.41, no.13, pp.3039-3046, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 13
  • Publication Date: 2006
  • Doi Number: 10.1080/01496390600854610
  • Journal Name: SEPARATION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3039-3046
  • Karadeniz Technical University Affiliated: Yes

Abstract

A macrocyclic vic-dioxime (1) and its mononuclear Ni(II) complex (2) were studied as extractant. The aqueous solutions of Ag+, Mn2+, Pb2+, Ni2+, Cu2+, Cd2+, and Zn2+ picrates were used for extraction experiments. The solutions of the ligands in two different organic solvents were used as organic phases. The metal picrate extractions were carried out at 25 +/- 0.1 degrees C by using UV-visible spectrometry. The most effective transport was observed for Ag+ picrate among the tested metal picrates. The effect of pH on the extraction of Ag+ picrate was evaluated with the ligands. The ratio of extracted Ag-complex to chloroform phase was 2:1 (L:M) for (2). In other cases the ratios were 1:1 for both (1) and (2). Molar ratio method was also used to demonstrate the composition. The values of the extraction constants (log K-ex) were determined for the extracted Ag-complexes.