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ISRN Organic Chemistry
Volume 2012 (2012), Article ID 208284, 8 pages
http://dx.doi.org/10.5402/2012/208284
Research Article

Synthesis of Macrocyclic Bis-Hydrazone and Their Use in Metal Cations Extraction

Department of Chemistry, Faculty of Science, University of Damascus, Damascus, Syria

Received 9 October 2011; Accepted 30 October 2011

Academic Editor: G. Li

Copyright © 2012 Farouk Kandil et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Two new macrocyclic hydrazone Schiff bases were synthesized by reaction of succindihydrazide and adipdihydrazide with acetylacetone. Hydrazones have been characterized by elemental analyses and IR, mass, 1H NMR, and 13C NMR spectral data. Hydrazones have been studied by liquid-liquid extraction towards the s-metal ions (Li+, Na+, and K+) and d-metal ions (Cu2+ and Cr3+) from aqueous phase to organic phase. The effect of chloroform and dichloromethane as organic solvents over the metal chlorides extraction was investigated at 25 ± 0.1°C by using flame atomic absorption. We found differences between the two solvents in extraction selectivity.