The crystal C81H78N12O6Cd3 was synthesized and its structure was determined by single crystal X-ray diffraction method. The complex crystallizes in
the monoclinic system space group P21/n with cell parameters, a=15.959(4) , b=26.222(3) , c=25.907(6) , β=101.60(2). The non-isothermal kinetics of the crystal
was studied by use of non-isothermal TG and DTG curves. The kinetic parameters were analyzed by means of integral and differential
methods, and mechanism functions of the thermal decomposition reaction for its second step were proposed. The kinetic equation
of thermal decomposition is expressed as:
dα/dt=Aexp(-E/RT)1.5(1-α)4/3[1/(1-α)1/3-1]−1. The average values of E(kJ mol−1) and lnA/s−1 are 339.25, 43.95, respectively.