Cupric ion binding by dihydroxybenzoic acids

Tamas Kiss, Henryk Kozlowski, Giovanni Micera, Liliana Strinna Erre

Research output: Contribution to journalArticle

28 Citations (Scopus)


A potentiometric and spectroscopic study has been carried out on the copper(II) complexes formed by 2,x-dihydroxybenzoic acids (x = 4, 5 or 6) in aqueous solution. It has been found that, in the low pH range, the ligands coordinate through the carboxylate group. At above pH 5 the major species are chelated complexes in which one or two ligands bind the metal ion through the carboxylate and adjacent phenolate groups. The results are compared to earlier literature data available for copper(II) dihydroxybenzoate and salicylate complexes.

Original languageEnglish
Pages (from-to)647-651
Number of pages5
Issue number5
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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