A new coordination complex [Cu(IMI)4](PA)2 had been synthesized with imidazole(IMI) as ligands and picrate(PA-) groups as outer anions,and characterized by Fourier transform infrared(FTIR) spectrum and elemental analysis.Its crystal structure was determined by single crystal X-ray diffraction(XRD) analysis.The crystallographic data show that the crystal belongs to monoclinic,C2/c space group,a=2.542(5) nm,b=0.91773(18) nm,c=1.3778(3) nm,β=107.854(3)° and Z=4.Furthermore,the central copper(II) ion is coordinated by four N atoms from four imidazole ligands.All the molecular units are linked into a zigzag pattern along a-axis by the hydrogen bonds,and extended to the distance regularly.Thermal decomposition mechanisms were determined based on differential scanning calorimetry(DSC) and thermogravimetry-differential thermogravimetry(TG-DTG) analysis,and kinetic parameters of the first exothermic process were studied using Kissinger’s and Ozawa-Doyle’s method,respectively.Sensitivity tests show that the title complex has low sensitivity to external stimulus,but it has a higher energy of combustion of 14.2 kJ/g due to which it may be used as the additives of energetic materials to improve the explosive performance. A new coordination complex [Cu (IMI) 4] (PA) 2 had been synthesized with imidazole (IMI) as ligands and picrate (PA-) groups as outer anions, and characterized by Fourier transform infrared (FTIR) spectrum and elemental analysis. Its crystal structure was determined by single crystal X-ray diffraction (XRD) analysis. The crystallographic data show that the crystal belongs to monoclinic, C2 / c space group, a = 2.542 (5) nm, b = 0.91773 (18) nm, c = 1.3778 (3) nm, β = 107.854 (3) ° and Z = 4.Furthermore, the central copper (II) ion is coordinated by four N atoms from four imidazole ligands. All the molecular units are linked into a zigzag pattern along a-axis by the hydrogen bonds, and extended to the distance regularly.Thermal decomposition mechanisms are based on differential scanning calorimetry (DSC) and thermogravimetry-differential thermogravimetry (TG-DTG) analysis, and kinetic parameters of the first exothermic process were studied using Kissinger’s and Ozawa-Doyle’s method, respectively. Sensitivity tests show that the title complex has low sensitivity to external stimulus, but it has a higher energy of combustion of 14.2 kJ / g due to which it may be used as the additives of energetic materials to improve the explosive performance.