Abstract
The kinetic properties and thermal stability of [Co(4-Cl-3-OHpy)
2Cl
2] · 2H
2O and
trans-[Ni(4-Cl-3-OHpy)
4Cl
2] · 4H
2O were studied in a dynamic nitrogen atmosphere using TG, DTG and DSC methods. Kinetic parameters were calculated using mechanistic integral equations. For the tetrahedral cobalt(II) complex, the three-dimensional diffusion (Ginstling-Brounshtein function) D
4 mechanism governs the degradation process; for the octahedral nickel(II) complex the three-dimensional diffusion (Jander function) D
3 mechanism acts up to
α ≈ 0.5 decomposition.