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Nitrogen‐Rich Salts based on 1,1’‐Dihydroxy‐5,5’‐Azobistetrazole: aNew Family of Energetic Materials with Promising Properties
Author(s) -
Zhang ZhiBin,
Zhang JianGuo,
Gozin Michael
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800635
Subject(s) - detonation , energetic material , nitrogen , chemistry , standard enthalpy of formation , decomposition , thermal decomposition , calorimetry , fourier transform infrared spectroscopy , yield (engineering) , elemental analysis , infrared spectroscopy , thermal stability , mass spectrometry , spectroscopy , detonation velocity , crystal structure , oxygen balance , crystallography , oxygen , inorganic chemistry , explosive material , organic chemistry , chemical engineering , materials science , thermodynamics , physics , chromatography , quantum mechanics , engineering , metallurgy
A series of nitrogen‐rich energetic heterocyclic 1,1’‐dihydroxy‐5,5’‐azobistetrazole (AZO) salts are synthesized with ethylenediammonium ( 1 ), hydrazinium ( 2 ), semicarbazidium ( 3 ), guanidinium ( 4 ), 1‐amino‐1,2,3‐triazolium ( 5 ), 4‐amino‐1,2,4‐triazolium ( 6 ) and 5‐amino‐tetrazolium ( 7 ). The salts have characterized through elemental analysis, Fourier Transform infrared spectroscopy (FT‐IR) spectroscopy, 1 H NMR, 13 C NMR and mass spectrometry. The crystal structures determined by single crystal X‐ray diffraction. The thermal decomposition behaviors investigated by using the DSC and TG‐DTG technologies. The enthalpies of formation are calculated through the combustion heat data measured through the oxygen bomb calorimetry. All the salts have acceptable thermal stability with the highest decomposition temperature of 301.8 °C, excellent high positive formation enthalpies ranging from 350.5 kJ mol −1 to 1500.3 kJ mol −1 , and good insensitivity to outer stimuli compared to the traditional RDX. The promising detonation parameters of the salts yield detonation velocities ( D ) and pressures ( P ) are ranging from 7327 m s −1 to 8931 m s −1 , and from 21.7 GPa to 32.7 GPa. Considering the advantage, it is possible to prepare these nitrogen‐rich energetic salts as promising energetic materials. It's hoped that the present author's research contributed to the expansion and application of the chemistry of 1,1’‐dihydroxy‐5,5’‐azobistetrazole.