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

Fingerprint

Deprotonation
Dipeptides
cysteine
Cobalt
Cysteine
Zinc
cobalt
zinc
Nuclear magnetic resonance
Amides
Metal ions
Protons
nuclear magnetic resonance
Metals
Ligands
Ions
amides
metal ions
ligands
protons

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Cobalt(II) and zinc(II) complexes of cysteine containing dipeptides. / Sóvágó, I.; Kiss, T.; Várnagy, K.; Révérend, B. Decock Le.

In: Polyhedron, Vol. 7, No. 12, 1988, p. 1089-1093.

Research output: Contribution to journalArticle

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