THERMAL STABILITY OF Ni(II) AND Cu(II) MIXED LIGAND COMPLEXES DERIVED FROM BIOLOGICALLY IMPORTANT SCHIFF BASES, AZOLES AND MORPHOLINE

Document Type : Original Article

Authors

1 Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt

2 Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut, Egypt

Abstract

Thermogravimetry (TG) and differential thermogravimetry
(DTG) have been applied to the investigation of the thermal
behavior of six mixed ligand complexes of Ni(II) and Cu(II)
comprising the Schiff bases: o-hydroxyacetophenoneethanolimine
(OHAE), N-salicylidene-o-iminophenol (SOP) and N-salicylideneo-
toluidine (SOT) as well as morpholine (Morph) and certain
azoles. The azoles used are: 2-amino-thiazole (2-Atz),
benzothiazole (Btz), 2-methylbenzothiazole (2-Mbtz), 3-methyl-2-
selenoxobenzothiazole (3-Msbtz) and thiabendazole (Tbdz).
Heating the compounds first results in a release of the morpholine
or the azoles. Kinetics of the decomposition reactions were studied
using non-mechanistic equations.