Thermal studies of cobalt(II), nickel(II) and copper(II) 3-substituted-4-salicylideneamino-5-mercapto-1,2,4-triazole complexes

Complexes of Co-II, Ni-II and Cu-II with 3-substituted-4-salicylideneamino- 5-mercapto-1,2,4-triazole have been prepared and characterized by elemental analysis, electronic, i.r., e.s.r. and t.g. studies. T.g. studies show tha t the complexes thermally degrade in two steps. Kinetic and thermodynamic p arameters were computed from the thermal decomposition data. The activation energies of both the thermal degradation steps lie in the 0.24-42.67 kJ mo l(-1) range.