Azide-Based High-Energy Metal-Organic Frameworks with Enhanced Thermal Stability. 2019

Ignacio Chi-Durán, and Javier Enríquez, and Carolina Manquián, and Rubén Alejandro Fritz, and Andrés Vega, and Daniel Serafini, and Felipe Herrera, and Dinesh Pratap Singh
Department of Physics, University of Santiago Chile, Avenida Ecuador 3493, Estación Central, 9170124 Santiago, Chile.

We describe the structure and properties of [Zn(C6H4N5)N3] , a new nonporous three-dimensional high-energy metal-organic framework (HE-MOF) with enhanced thermal stability. The compound is synthesized by the hydrothermal method with in situ ligand formation under controlled pH and characterized using single-crystal X-ray diffraction, elemental analysis, and Fourier transform infrared. The measured detonation temperature (T det = 345 °C) and heat of detonation (ΔH det = -0.380 kcal/g) compare well with commercial explosives and other nitrogen-rich HE-MOFs. The velocity and pressure of denotation are 5.96 km/s and 9.56 GPa, respectively. Differential scanning calorimetry analysis shows that the denotation of [Zn(C6H4N5)N3] occurs via a complex temperature-dependent mechanism.

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