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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. [ABSTRACT FROM AUTHOR]

A new energetic Ba(II) coordination polymer [Ba(tza)2]n (where tza = tetrazole-1-acetic acid anion) was synthesized and characterized by X-ray single crystal diffraction, elemental analysis and IR spectroscopy. In the molecule, the central Ba(II) cation was coordinated by eight carboxylic O atoms from six different tza ions. Quadridentate tza anion bridged three various Ba(II) atoms and formed a 2D supramolecular network. 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 = 22.47 - 291 × 103/RT. Critical temperature of thermal explosion, thermodynamic parameters, energy of combustion, enthalpy of formation and sensitivities of [Ba(tza)2]n were measured or calculated to argue that as a potential energetic material. [ABSTRACT FROM AUTHOR]