Synthesis and Thermal Decomposition Kinetics of the Complexes[Sm(o-NBA)3bipyl2·2H2O and[Sm(o-BrBA)3bipy]2 2H2O

摘要

Two new complexes[Sm(o-NBA)3bipy]2·2H2O(1)and[Sm(o-BrBA)3bipy]2·2H2O(2)(where o-NBA is o-nitrobenzoic acid,o-BrBA is o-bromobenzoic acid,and bipy is 2,2'-bipyridine)were prepared and characterized by elemental analysis,IR,UV,and molar conductance,respectively.The thermal decomposition behaviors of the two complexes were investigated by means of TG-DTG and IR techniques.The thermal decomposition kinetics was studied by using advanced double equal-double steps method,nonlinear integral isoconver-sional method,and nonlinear differential isoconversional method.The kinetic parameters of the second-step process for the two complexes were obtained,respectively.