Synthesis, thermal stability and kinetic studies of copper(II) and cobalt(II) complexes derived from 4-aminobenzohydrazide and 2-mercaptobenzothiazole

Abstract

The divalent transition metal ions Cu (II) and Co (II) compounds of the formula; [ M(ABZH)(MBTH)Cl 2 (H 2 O) 2 ], (M = Cu (II) and Co (ІІ), ABZH=4-Aminobenzohydrazide (L1) and MBTH = 2-mercaptobenzthiazole (L2) have been synthesized and characterized. The two compounds has been designated based on elemental analysis, electronic spectral analysis, FT-IR , magnetic measurements and XRD. The thermal properties of copper(II) and cobalt(II) metal compounds in dynamic air have been analyzed via thermogravimetry(TG), and differential thermogravimetry(DTG). The kinetic analyses of the thermal decomposition for the two compounds were calculated by the Coats.Redfern and Horowitz.Metzger methods. The obtained kinetic parameters, display the kinetic compensation effect(KCE).