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An Unusual Layered Crystal Packing Gives Rise to a Superior Thermal Stability of Energetic Salt of 3,6‐Bishydrazino‐1,2,4,5‐tetrazine
Author(s) -
Zhang GuDan,
Wang Zhen,
Zhang JianGuo
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800086
Subject(s) - tetrazine , thermal stability , close packing of equal spheres , salt (chemistry) , thermal , crystal (programming language) , chemistry , crystallography , elemental analysis , materials science , thermodynamics , organic chemistry , physics , computer science , programming language
Five energetic salts of 3,6‐bishydrazino‐1,2,4,5‐tetrazine (BHT), namely (BHT) 2 (NTO) 3 ( 3 ), (BHT)(BTT) · 2H 2 O ( 4 ), (BHT)(DNP) 2 ( 5 ), (BHT)(NATr) 2 ( 6 ), and (BHT)(FOX‐7) 2 ( 7 ), were synthesized and fully characterized by elemental analysis, FT‐IR, and mass spectra. The crystal structures of salts 3 and 4 were obtained and determined. Sensitivities towards outside stimuli and thermal behaviors of all the compounds were investigated, besides, thermodynamics of both 3 and 4 were calculated as well. The compounds 3 – 7 exhibit splendid thermal stabilities and satisfactory sensitivities simultaneously. Notably, unlike the previously known layered packing, compound 4 was found to adopt an unusual layered crystal packing with arch layers alternately arranged upward or downward. It may play an important role in contributing to its superior thermal stability (350 °C), providing an enlightening thinking to design new highly thermal stable energetic materials.