Synthesis, Structure Characteristic and Thermal Behavior of Two New Metal-organic Azo-triazole Compounds: [Zn(phen)3] ZTO 6H2O and [Cu(phen)3] ZTO 6H2O

[Zn(phen)3] ZTO 6H2O(1) and [Cu(phen)3] ZTO 6H2O(2) were synthesized by the reaction of Zn(NO3)2 6H2O/Cu(NO3)2 3H2O with 4,4-azo-1H-1,2,4-triazol-5-one(ZTO) and 1,10-phenanthroline(phen). The two compounds were characterized by elemental analysis and IR spectrum analysis, respectively. Compound 1 was also characterized by single crystal X-ray diffraction analysis. For compound 1, the coordination geometry around the Zn2+ is a distorted octahedron, with the bite angles of 76.7(3)°―77.6(4)° for all three phen ligands. Moreover, the thermal behaviors and thermal decomposition kinetics were studied and analyzed. Besides, thermal stability and safety parameters(TSADT, Tb) are 164.7 and 166.4 °C for compound 1, and 149.6 and 150.8 °C for compound 2, respectively.