Cobalt(II) and zinc(II) complexes of cysteine containing dipeptides

I. Sóvágó, T. Kiss, K. Várnagy, B. Decock Le Révérend

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Formation of the proton, zinc(II) and cobalt(II) complexes of GlyCys and CysGly was studied by pH-metric, spectrophotometric and 1H-NMR methods. CysGly forms stable bis-complexes with both metal ions, with cysteine-like (S,N)-coordination. (S,O)-coordination is favoured, however, in the zinc(II) and cobalt(II) complexes of GlyCys. The binding mode is supported by the deprotonation micro-constants of the ligands and protonated complexes, and by the results of spectrophotometric and NMR studies. Amide deprotonation and coordination can not be observed below pH 10 in any of the systems studied.

Original languageEnglish
Pages (from-to)1089-1093
Number of pages5
JournalPolyhedron
Volume7
Issue number12
DOIs
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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