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Feb 8, 2023Keywords:
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Extraction of toxic metal ions by resorcin[4]arene Schiff base derivatives
Hitesh M. Parekh
Hitesh M. Parekh
Abstract
The present work reports the synthesis of eight new resorcin[4]arene Schiff base derivatives (2a–h) by reacting 2,6-dihydroxyacetophenone with different aliphatic aldehydes, followed by condensation with n-butylamine to give the final products in quantitative yields. All the synthesized Schiff base derivatives were characterized by spectroscopic techniques, such as 1H-NMR, 13C-NMR, IR, mass spectrometry and elemental analysis. Application of these Schiff base derivatives is shown in the extraction of some toxic cations, namely Ni2+,Mn2+, Hg2+, Co2+, and anion, namely Cr2O7 2–. The results showed higher extraction efficiency for Hg2+ compared to the other cations tested under identical experimental conditions. Furthermore, the extraction of the dichromate anion was higher with 2d under highly acidic conditions.
