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The thermal properties of a number of Schiff base metal complexes in nitrogen atmosphere have been investigated by thermogravimetry (TG) and differential thermogravimetry (DTG). The kinetic analyses of the thermal decomposition were studied using the Coats-Redfern and Horowitz-Metzger equations. The obtained kinetic parameters show the kinetic compensation effect.

Abstract5-[p-(R-Sulfonyl)phenylazo]-1,10-o-phenanthroline (L) and its octahedral complexes of the type [Ni(R2dtp)2(L)] (where R2dtp = diethyl-or dipropyldithiophosphate) with the core NiN2S4 have been prepared and characterized by spectral, magnetic, and thermogravimetric methods. The thermal decomposition mechanism of the compounds was proposed and the kinetic parameters of decomposition were calculated making use of the Coats—Redfern and Horowitz—Metzger equations.

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-2selenoxobenzothiazole (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.

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