Effects of side-chain donor groups on deprotonation of peptide amide in copper(II) complexes at high pH

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Abstract

The copper(II) complexes of the GlyAsp (glycyl-l-aspartic acid), GlyAsn (glycyl-l-asparagine), GlySer (glycyl-l-serine), GlyThr (glycyl-l-threonine), GlyPhe (glycyl-l-phenylalanine), SerGly (l-serylglycine), ThrGly (l-threonylglycine), PheGly (l-phenylalanylglycine) and GlyGly (glycylglycine) groups as a reference were studied by pHmetric, spectrophotometric and ESR methods at high pH and high ligand excesses (up to a metal-to-ligand ratio of 1:50). The influence of the side-chain donor groups and the aromatic ring on the competitive formation of the mixed hydroxo complex [Cu(AH-1)OH]and the deprotonated complex [Cu(AH-1)2] was evaluated.

Original languageEnglish
Pages (from-to)2463-2467
Number of pages5
JournalPolyhedron
Volume8
Issue number20
DOIs
Publication statusPublished - 1989

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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