Potassium 4,4′-Bis(dinitromethyl)-3,3′-azofurazanate: A Highly Energetic 3D Metal-Organic Framework as a Promising Primary Explosive

• Published in: Angewandte Chemie International Edition Vol. 55; no. 18; pp. 5565 - 5567
• Main Authors: Tang, Yongxing, He, Chunlin, Mitchell, Lauren A., Parrish, Damon A., Shreeve, Jean'ne M.
• Format: Journal Article
• Language: English
• Published: WEINHEIM Blackwell Publishing Ltd 25.04.2016; Wiley; Wiley Subscription Services, Inc
• Edition: International ed. in English
• Subjects: Chemistry; Chemistry, Multidisciplinary; Detonation; detonation properties; Energetic materials; Metal-organic frameworks; Physical Sciences; Potassium; primary explosives; Science & Technology; Sensitivity; X-ray diffraction; HIGH-INITIATION-POWER; primary explosives; PERFORMANCE; X-ray diffraction; energetic materials; DETONATION; DENSITY MATERIAL; THERMOSTABILITY; detonation properties; INSENSITIVITY; metal-organic frameworks
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201601432

Environmentally acceptable alternatives to toxic lead‐based primary explosives are becoming increasingly important for energetic materials. In this study, potassium 4,4′‐bis(dinitromethyl)‐3,3′‐azofurazanate, comprising two dinitromethyl groups and an azofurazan moiety, was synthesized and isolated as a new energetic 3D metal–organic framework (MOF). Several attractive properties, including a density of 2.039 g cm−3, a decomposition temperature of 229 °C, a detonation velocity of 8138 m s−1, a detonation pressure of 30.1 GPa, an impact sensitivity of 2 J, and friction sensitivity of 20 N make 4 a good candidate as a green primary explosive. A bundle of energy: Potassium 4,4′‐bis(dinitromethyl)‐3,3′‐azofurazanate, composed of K+ ions and dinitromethylazofurazan moieties, was synthesized and isolated as a nitrogen‐rich 3D metal–organic framework (MOF). The material shows attractive energetic properties which make it a promising candidate as a next‐generation green primary explosive. Atom colors: C=gray; O=red; N=blue.