Studies on the Mixed-Ligand Complexes. III. Mixed-Ligand Complexes between Alloxan and Glycine with Bivalent Metals

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The syntheses of the mixed-ligand complexes between alloxan and glycine with bivalent metals (Cu, Ni, Co, Zn, Pb, and Cd) were made by mixing them in the ratios of 1 : 1 : 1 at pH3 and by allowing to stand at a room temperature for about a week. The objective products deposited gradually. The separation from their parent complexes, i.e., bisglycinato metal complexes, were made by the differences of solubility in H_2O. By decomposing the mixed-ligand complexes in 1N HCl, the constituents were identified by thinlayer chromatography with employing microcrystalline cellulose powder as an adsorbent and BuOH : AcOH : H_2O (4 : 1 : 2) as a solvent mixture. The discussions as to the binding sites with the ligands were made from infrared (IR) spectra and the structures were postulated of the alloxan-metal-glycine and alloxan-Cu-glycylglycine complexes.
公益社団法人日本薬学会の論文
1973-01-25