Synthesis and cation complexation of calix[4]azacrowns and a spirobiscalix[4]azacrown

Abdelwaheb Hamdi, Mohamed Habib Noomen, Rym Abidi, A. Rim Woo, Jeong Hwan Cho, Yang Kim

Research output: Contribution to journalJournal articlepeer-review

3 Scopus citations

Abstract

The synthesis and complexation properties of three new derivatives, one spirobiscalix[4]azacrown (1) and two calix[4]azacrown (2 and 3), are reported. Complexation studies of the three ligands toward transition and heavy metal cations have been carried out and monitored by UV absorption spectrophotometry in acetonitrile. Mononuclear complexes were detected for all complexes, whereas binuclear species (M 2L) were also formed in the case of ligand 1 with Cu 2+ and Pb 2+. The extraction properties of 1, 2 and 3 toward Cu 2+, Zn 2+, Pb 2+, Ag 2+ and Cd 2+ are also reported. The results showed that complexation is the main factor affecting extraction with ligands 2 and 3, while with ligand 1 it is not.

Original languageEnglish
Pages (from-to)287-291
Number of pages5
JournalJournal of Inclusion Phenomena and Macrocyclic Chemistry
Volume71
Issue number3-4
DOIs
StatePublished - Dec 2011
Externally publishedYes

Keywords

  • Calixarene
  • Calixazacrown
  • Complexation
  • Extraction
  • Stability constant

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