2580-79-2Relevant articles and documents
?-ADDUCTS IN THE 1,2,4-OXADIAZOLE SERIES
Andrianov, V. G.,Eremeev, A. V.
, p. 714 (1990)
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Wenger et al.
, p. 1456,1461,1462,1466,1468 (1957)
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Bis(1,2,4-oxadiazole)bis(methylene) Dinitrate: A High-Energy Melt-Castable Explosive and Energetic Propellant Plasticizing Ingredient
Johnson, Eric C.,Sabatini, Jesse J.,Chavez, David E.,Sausa, Rosario C.,Byrd, Edward F. C.,Wingard, Leah A.,Guzmàn, Pablo E.
, p. 736 - 740 (2018)
Discussed herein is the synthesis of bis(1,2,4-oxadiazole)bis(methylene) dinitrate, determination of its crystal structure by X-ray diffractometry, calculations of its explosive performance, and sensitivity measurements. Steps taken to optimize the synthesis process and to improve yields of the dinitrate are also discussed. Bis(1,2,4-oxadiazole)bis(methylene) dinitrate has a calculated detonation pressure 50% higher than that of TNT. The dinitrate compound exhibits a relatively high decomposition temperature that is rarely observed for nitrate-based compounds. The dinitrate was found to have lower sensitivities to impact and friction compared with RDX. It is believed that intramolecular hydrogen bonding observed in the crystal lattice assists in the relatively high thermal stability and relatively low sensitivity of the material.
Synthesis and Characterization of the Potential Melt-Castable Explosive 3-(1,2,4-Oxadiazolyl)-5-Nitratomethyl Isoxazole
Byrd, Edward F. C.,Johnson, Eric C.,Miller, Christopher W.,Orlicki, Joshua A.,Reid, Tristen A.,Sabatini, Jesse J.,Sausa, Rosario C.
, p. 875 - 878 (2021/07/22)
The synthesis of 3-(1,2,4-oxadiazolyl)-5-nitratomethyl isoxazole (C6H4N4O5), its physical properties, and its theoretical performances are described. This energetic material was found to have a melting point range of 76.6–79.2 °C, and a thermal onset decomposition temperature of 184.5 °C. These thermal features put this material into the standalone melt-castable explosive class. The material was found to have TNT performance, and was found to be insensitive to impact, friction, and electrostatic discharge, despite having a nitric ester functionality. A critical reaction in making this molecule was the desymmetrization of diaminoglyoxime. The optimization of this transformation is described. Previous reports of this desymmetrization were found to be inaccurate, as the desymmetrization reaction produces a co-crystal of mono- and bi-1,2,4-oxadiazole products.
METHOD FOR PREPARING DIHYDROXYLAMMONIUM 5,5'-BISTETRAZOLE-1,1'-DIOLATE
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Paragraph 0061; 0062-0064, (2019/05/15)
The present invention relates to a method for manufacturing dihydroxylammonium 5,5andprime;-bistetrazole-1,1andprime;-diolate. More specifically, the present invention relates to the method for manufacturing dihydroxylammonium 5,5andprime;-bistetrazole-1,1andprime;-diolate using a diaminoglyoxime intermediate. The present invention can provide a safe and convenient method for manufacturing TKX-50.(AA) ^(13)C-NMR spectrum of TKX-50COPYRIGHT KIPO 2019