Studies on the Synthesis of Metal Complexes. IV. The Cobalt (III) Complexes of Ammoniatriacetic Acid

Abstract

Abstract The cobalt(III) complexes containing ammoniatriacetato group (ata) as a quadridentate ligand are newly prepared: i) α-K[Co ata(OH)(OH2)]·2H2O ii) β-K[Co ata(OH)(OH2)]·3H2O iii) K2[ataCo(OH)2Co ata]·6H2O iv) K2[Co ata(CO3)]·H2O v) K2[Co ata(C2O4)]·H2O In order to determine the structural formulae of these complexes, their visible, ultraviolet and infrared spectra were measured, as well as their thermal decomposition and their potency to coagulate ferric oxide sol.