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A novel energetic cocrystal composed of CL‐20 and 1‐methyl‐2,4,5‐trinitroimidazole with high energy and low sensitivity
Author(s) -
Lian Pengbao,
Zhang Luyao,
Su Hongping,
Chen Jun,
Chen Lizhen,
Wang Jianlong
Publication year - 2022
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s2052520622000245
Subject(s) - cocrystal , differential scanning calorimetry , detonation , materials science , diffraction , infrared spectroscopy , sensitivity (control systems) , decomposition , crystallography , explosive material , thermal decomposition , molar ratio , analytical chemistry (journal) , chemistry , organic chemistry , molecule , thermodynamics , hydrogen bond , physics , optics , electronic engineering , engineering , catalysis
A cocrystal explosive comprising 2,4,6,8,10,12‐hexanitro‐2,4,6,8,10,12‐hexaazaisowurtzitane (CL‐20) and 1‐methyl‐2,4,5‐trinitroimidazole (MTNI) (molar ratio, 1:1) was synthesized. The structure of the cocrystal was characterized by single‐crystal X‐ray diffraction. Its structure was further determined by powder X‐ray diffraction, infrared spectroscopy and differential scanning calorimetry which showed that its morphology was different from the morphology of the mechanical mixture of two raw materials. The decomposition temperature of the cocrystal is lower than that of CL‐20 and MTNI. The calculated detonation performance is slightly lower than that of HMX, but the cocrystal has excellent sensitivity performance relative to that of CL‐20, even lower than that of RDX. These features make this cocrystal ideal to be used in applications with low‐sensitivity requirements.