Interaction of Copper(II) Ions with Certain Oxyacids and Azoles

Compounds composed of [Cu(HIm, metIm)2–3L] ∙ nH2O (n = 0, 2) were obtained during the interaction slightly soluble tartrate and copper(II) salicylate CuL 1–2, L2−—Tar2−, Sal2−) with imidazole (HIm) 2-methylimidazole (metIm). Mono- bi-ligand salts analyzed; process their thermal decomposition was studied. The solubility constants KS CuC4H4O6 2H2O CuC7H4O3 H2O at ionic strength 0.3 determined. IR spectroscopy method showed participation in complexation nitrogen atom N(3) oxygen atoms carboxyl groups oxyacids, as well hydroxyl group salicylic acid mixed-ligand copper(II). compositions stability imidazole-tartrate(salicylate) complexes an aqueous solution determined by performing photometry spectrophotometry monoligand [CuTar] [CuSal] isomolar series methods.