Xiaolan SONG, Yi WANG, Chongwei AN, Fengsheng LI
Abstract: Molecular perovskite energetic material DAP-4, i.e. (H2dabco)[NH4(ClO4)3], is a very excellent explosive, but its friction sensitivity is too high and the raw materials are slightly expensive. Therefore, in order to obtain an explosive with performance close to DAP-4, lower sensitivity and cost than DAP-4, and a structure similar to DAP-4, a novel analogical molecular perovskite energetic material, NP-1, was synthesized via a common reaction between an acid and an amine. The single-crystal diffraction results indicate that the molecular formula of NP-1 is C14H31N4O12Cl3 or [(C14H31N4)(ClO4)3]. NP-1 belongs to the orthorhombic crystal system and Pnma space group; each unit cell contains eight C14N4H34, six guest water molecules and twenty-four perchlorate ions (ClO4–). The unit cell parameters are a=25.154(2) Å, b=9.5094(8) Å, c=19.7867(14) Å, and α=β=γ=90°. The results of XRD analysis and mass spectrometry analysis verified the finds from single crystal diffraction analysis. DSC analysis indicates that the thermal decomposition temperature of NP-1 is 211oC, and the activation energy for thermal decomposition of NP-1 is 241.6 kJ/mol. NP-1 has the characteristics of low sensitivity, easy availability of raw materials, simple preparation process, and low cost. Thus, NP-1 is more suitable for large-scale production during emergencies to compensate for the shortage of main explosives than the molecular perovskite energetic material DAP-4.
Ref: JPyro 2025 (80-88)
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