Issue 11, 1986

Studies on transition-metal–peptide complexes. Part 12. Copper(II) complexes of dipeptides containing phenylalanine and tyrosine

Abstract

The thermodynamic quantities relating to the copper(II) complexes of glycyl-L-phenylalanine, glycyl-L-tyrosine, L-phenylalanylglycine, and L-tyrosylglycine have been determined pH-metrically and calorimetrically at 25 °C and at an ionic strength of 0.2 mol dm–3(KCl). From these data and the u.v., visible, and e.s.r. spectra of the complexes, it has been established that, besides metal–ligand co-ordination characteristic of simple aliphatic dipeptides, there are interactions between the d-electron orbitals of the copper(II) and the 6π-electron system of the aromatic amino acid, between the hydrophobic parts of the molecule, and between the copper(II) and the phenolate group of the ligand.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1986, 2443-2447

Studies on transition-metal–peptide complexes. Part 12. Copper(II) complexes of dipeptides containing phenylalanine and tyrosine

T. Kiss and Z. Szücs, J. Chem. Soc., Dalton Trans., 1986, 2443 DOI: 10.1039/DT9860002443

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