摘要:
A new chelate (eta(5) - C5H5)(2)Ti(SB)(2), where SB = O, N donor Schiff base salicylidene-4-methylaniline, was synthesized. The course of thermal degradation of the chelate was studied by thermogravimetric (TG) and differential thermal analysis (DTA) under dynamic conditions of temperature. The order of the thermal decomposition reaction and energy of activation was calculated from TG curve while from DTA curve the change in enthalpy was calculated. Evaluation of the kinetic parameters was performed by Coats-Redfern as well as Piloyan-Novikova methods which gave n = 1, Delta H = 1.114 kJ . mol(-1), Delta E = 27.01 kJ . mol(-1), Delta S = -340.12 kJ . mol(-1). K-1 and n = 1, Delta H = 1.114 kJ . mol(-1), Delta E = 20.01 kJ . mol(-1), Delta S = -342.60 kJ . mol(-1). K-1, respectively. The chelate was also characterized on the basis of different spectral studies viz. conductance, molecular weight, IR, UV-visible and H-1 NMR, which enabled to propose an octahedral structure to the chelate.