Studies on transition-metal-peptide complexes. Part 2. Equilibrium study of the mixed complexes of copper(II) with aliphatic dipeptides and amino-acids

István Nagypál, Arthur Gergely

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

In a total of 39 equilibrium systems, the stability constants of mixed dipeptide-amino-acid complexes of copper(II) have been determined at 25 °C and ionic strength I = 0.2 mol dm-3 KCl. The dipeptides used are glycylglycine, glycyl-DL-α-alanine, and DL-α-alanyl-DL-α-alanine, and the amino-acids are glycine, α-alanine, α-aminobutyric acid, norvaline, β-alanine, serine, threonine, ornithine, lysine, asparagine, glutamine, aspartic acid, and glutamic acid. From the exceptionally high relative stabilities of the mixed-ligand complexes containing β-alanine and aspartic acid, it is concluded that in these complexes the amino-acids occupy one equatorial and one axial site in the co-ordination sphere of the copper(II).

Original languageEnglish
Pages (from-to)1109-1111
Number of pages3
JournalJournal of the Chemical Society, Dalton Transactions
Issue number11
DOIs
Publication statusPublished - Dec 1 1977

ASJC Scopus subject areas

  • Chemistry(all)

Fingerprint Dive into the research topics of 'Studies on transition-metal-peptide complexes. Part 2. Equilibrium study of the mixed complexes of copper(II) with aliphatic dipeptides and amino-acids'. Together they form a unique fingerprint.

  • Cite this