COMPLEX FORMATION OF DIOXOVANADIUM(V) WITH GLYCINE AND SOME GLYCYL PEPTIDES

Stability constants for complexes between dioxovanadium(V) and glycine, glycylglycine, glycylalanine, and giycylphenylalanine have been determined by a combination of Potentiometrie and spectrophotometries techniques in aqueous solution at 25 °C and 0.1 mol dm " ionic strength (NaClOj). Complex distribution curve depending on pH and metal-ligand ratio is given and influences of the side chains on the stability constants and the stoichiometrics of the formed complexes are given and discussed