Synthesis, characterization and structure effects on extractability and selectivity of N,N '-bis(salicylaldehydene) - 1,4-bis-(m-aminophenoxy)butane towards some divalent cations


Ziyadanogullari B., Cevizici D., Temel H. , Guzel R.

ANNALI DI CHIMICA, vol.97, no.5-6, pp.287-294, 2007 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 97 Issue: 5-6
  • Publication Date: 2007
  • Doi Number: 10.1002/adic.200790014
  • Title of Journal : ANNALI DI CHIMICA
  • Page Numbers: pp.287-294

Abstract

The extraction of copper(II), nickel(II) and cobalt(II) from the aqueous phase with N,N'-bis(saticylaldehydene)-1,4-bis-(in-aminophenoxy)butane (NIAS), which was synthesized from 1,4-bis(m-aminophenoxy)butane and salicylaldehyde, was studied. Microanalytical data, elemental analysis, UV-visible H-1 and C-13 n.m.r. spectra and IR-spectra were used to confirm the structures. The extractability and selectivity of divalent cations were evaluated as a function of relationship between distribution ratio of the metal and pH or ligand concentration. Cu+2 showed the highest extractability and selectivity at pH 6.0, whereas Ni+2 and Co+2 showed at pH 9.2. The stoichiometries of the compounds formed were estimated to be CuL, CoL, NiL, where L is N,N'-bis(salicylaldehydene)-1,4-bis-(m-aminophenoxy)butane. It was concluded that MAS can effectively be used in solvent extraction of copper(II), nickel(II) and cobalt(II) from the aqeous phase to the organic phase.