Abstract
Since some of oxine-like compounds showed antibacterial action in the presence of certain metal ions, this experiment was carried out to synthesize a model compound of mixed-ligand complexes of 8-hydroxyquinoline-5-sulfonic acid (abbr. as HQS below), being a water soluble oxine derivative, L-histidine (abbr. as His) and certain metal ions. The authors reported on the synthesis of the mixed-ligand complex of Co (III) containing oxine and glycine. In this paper His was used as a chelating amino acid, which is expected to form mixed-ligand complexes more easily than in the case of glycine in cooperating with HQS, since the stability constants of His-metal complexes are much closer to those of HQS-metal complexes.
