Selective extraction of Pd(ii) by p-tert-butylcalix[4]arenedicarboxylic acid

N. Morohashi, S. Iijima, K. Akasaka, T. Hattori

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Solvent extraction of various metal ions has been carried out using p-tert-butylcalix[4]arenedicarboxylic acid (4) as the metal extractant. Compound 4 showed high extraction selectivity toward Pd2+ ions. Slope analysis of the solvent extraction and X-ray structural analysis of a Pd2+ complex of compound 4 revealed that the selectivity results from the coordination of compound 2 to Pd2+ with the carboxy groups directly attached to the calix skeleton, thereby forming a rigid 2 : 2 (M/L) complex.

Original languageEnglish
Pages (from-to)2231-2234
Number of pages4
JournalNew Journal of Chemistry
Issue number6
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry


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