Thermal degradation behaviour of some polydithiooxamide metal complexes
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Abstract
polydithiooxamide has been investigated by thermogravimetric analysis (TGA) at a heating rate of
20°C min -1 under nitrogen. The Coats-Redfern integral method is used to evaluate the kinetic param-
eters for the successive steps in the decomposition sequence observed in the TGA curves. The process-
es of thermal decomposition taking place in the four complexes are studied comparatively as the TGA
curves indicate the difference in the thermal decomposition behavior of these complexes. The thermal
stabilities of these complexes are discussed in terms of repulsion among electron pairs in the valence
shell of the central ion and electronegativity effects.
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