Affiliations: College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, China | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, China | The 42nd Institute of the Fourth Academy of CASC, Xiangyang, China
Note: [] Corresponding author: Tong-Lai Zhang, State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, China. E-mail: [email protected]
Abstract: A new 1D polymeric strontium compound [Sr(tza)2(H2O)2]n was synthesized by reaction of tetrazole-1-acetic acid (Htza) with strontium carbonate, and characterized by X-ray single crystal diffraction, elemental analysis and IR spectroscopy. The central Sr(II) atom is coordinated by eight O atoms from 4 tza− ions and two water molecules. A zigzag chain along the c-axis is constructed by the tridentate tza− anion bridging two Sr(II) atoms. Differential scanning calorimetry (DSC) and thermogravimetric-differential thermogravimetric (TG-DTG) analyses were applied to assess the thermal decomposition behavior. The kinetic parameters were obtained by non-isothermal reaction kinetics, and the Arrhenius equation can be expressed as lnk = 22.17–258.2 × 103/RT. The critical temperature of thermal explosion values, ΔS≠, ΔH≠ and ΔG≠ were obtained at 562 K as, −65.71 J mol−1 K−1, 255.51 kJ mol−1 and 291.78 kJ mol−1, respectively.
