Thermal Behavior and Decomposition Kinetics of the Complexes of CuX_2 (X=NO_3, Br, Cl and ClO_4) with 3,3'-Dimethyl-1-(1H-1,2,4-triazol-1-yl)-2-butanone

Introduction N-1-Alkyl-substituted 1,2,4-triazole compounds, like some other heterocyclic derivatives containing nitrogen, have recently been the subjects of numerous studies due to their fungicidal action1 and plant growth regulation.2 Among them, the complexes with a sort of triazole as ligand are of considerable interest because of their broad-spectrum bioactivity, coordination and photo-chemical properties, as well as many potential applica-tions in various fields.3,4 In our previous paper…

Thermal Behavior and Decomposition Kinetics of the Complexes of CuX_2 (X=NO_3, Br, Cl and ClO_4) with 3,3'-Dimethyl-1-(1H-1,2,4-triazol-1-yl)-2-butanone

The thermal behaviors of the complexes of Cu(DMTZB)4X2 (DMTZB=3,3'-dimethyl-1-(1H-1,2,4-triazol-1- yl)-2-butanone, X=NO3 or ClO4) and Cu(DMTZB)2 X2 (X = Br or Cl) in a nitrogen atmosphere were studied un-der the non-isothermal conditions by simultaneous TG-DTG-DSC, EDS and elemental analysis techniques. The re-sults showed that their decomposition proceeded in three different ways mainly depending on the anions in the molecules. The heat effect associated with the decomposition step of DMTZB molecules was also different. The decomposition mechanisms and the kinetic parameters of DMTZB were determined and calculated by jointly using four methods, which showed that its pyrolysis was controlled by D3 mechanism but with different activation ener-gies and pre-exponential factors for different complexes.