Preparation, Crystal Structures, Thermal Decomposition and Explosive Properties of Two Novel Energetic Compounds M(IMI)₄(N₃)₂ (M = Cu^II and Ni^II, IMI = Imidazole): The New High–Nitrogen Materials (N > 46 %)

Abstract

Two novel multiligand coordination complexes of imidazolecopper(II) azide and imidazole-nickel(II) azide, Cu(IMI) 4 -(N 3 ) 2 and Ni(IMI) 4 (N 3 ) 2 , were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results show that the crystals of Cu(IMI) 4 (N 3 ) 2 and Ni(IMI) 4 (N 3 ) 2 crystallize in the orthorhombic Pna2 1 and monoclinic P2 1 /n space groups, respectively. The metal cations are six-coordinate, and are bound to two azido ligands by μ 1 -azido bridges and to four imidazole molecules through nitrogen atoms. Under nitrogen, with a heating rate of 5 K min -1 , these compounds go through two main exothermic stages between 420 K and 750 K during their thermal decom-

Thermogravimetric analysis, kinetic study, and pyrolysis–GC/MS analysis of 1,1ʹ-azobis-1,2,3-triazole and 4,4ʹ-azobis-1,2,4-triazole

“…In previous work [29–32], Kissinger method was widely used to determine the activation energies with the reaction process that occur under linear heating rate conditions. Although this method has some limitations, it is acceptable when an isoconversional method was used to back up the veracity of the Kissinger method [33].…”

“…And many other types of kinetic methods [33] were tried to back up the veracity of the Kissinger method, but all of the results are unsatisfactorily. According to the literature [29, 36–39], an applicable method namely Ozawa–Doyle method was commonly used to back up the Kissinger method in the kinetic calculation of the energetic materials for its’ acceptable result.…”

Preparation, crystal structure, thermal decomposition and explosive properties of the novel compound [Mg(H2O)6](ATZ)2(PA)2 (ATZ = 4-Amino-1,2,4-triazole and PA = Picrate)

“…Klapötke, Shreeve and other research groups have conducted extensive studies about high-nitrogen modern salts and compounds on the basis of azide [3][4][5][6][7], imidazole [8][9][10][11][12][13], triazole [14][15][16][17][18][19][20][21][22][23][24][25], tetrazole [26][27][28][29][30][31][32][33][34][35][36][37][38][39] and their derivatives.…”