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A new energetic complex, Ni(3,4’-Hbpt)2(Hoba)2(H2O)2(3,4’-Hbpt = 3-(3-pyridyl)-5-(4’-pyridyl)-1-H-1,2,4-triazole and H2 oba = 4,4’-oxybis(benzoic acid)), has been synthesized by hydrothermal reaction and characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction, thermogravimetric analyses and X-ray powder diffraction. Single-crystal X-ray diffraction analysis indicates that the complex belongs to the monoclinic system, space group P21/c with a = 10.2357(9), b = 24.594(2), c = 10.4225(9) A, β = 114.0110(10)°, V = 2396.7(4) A3, Dc =1.460 g/cm3, μ = 0.482 mm-1, Mr = 1053.63, F(000) = 1088, Z = 2, the final R = 0.0358 and wR =0.0973 with I > 2σ(I). Both 3,4’-Hbpt and H2 oba ligands adopt monodentate modes linking one Ni(II)ion to form a 0D motif. Furthermore, the 0D motifs are linked into a 3D supramolecular architecture with hydrogen bonds. In addition, the catalytic performance for thermal decomposition of the efficacy of ammonium perchlorate(AP) is explored by differential scanning calorimetry(DSC),which indicates that the complex is a good candidate for a promoter of the thermal decomposition of ammonium perchlorate.