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5,5′,6,6′‐Tetranitro‐2,2′‐bibenzimidazole: A Thermally Stable and Insensitive Energetic Compound
Author(s) -
Gutowski Łukasz,
Trzciński Waldemar,
Szala Mateusz
Publication year - 2018
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201700541
Subject(s) - materials science , chemistry , nanotechnology
Abstract A new energetic compound, namely a secondary explosive (5,5′,6,6′‐tetranitro‐2,2′‐bibenzimidazole, TNBBI) with high thermal stability is described. TNBBI is synthesized through direct nitration of 2,2′‐bibenzimidazole with nitric acid. TNBBI decomposes exothermically at 394 °C without visible melting. The heat of combustion and the standard enthalpy of formation are determined experimentally. The detonation parameters calculated for the new compound are slightly lower than those for TNT. However, the combination of TNBBI′s high decomposition temperature and low sensitivity make it a promising thermally stable energetic compound. The structure of the new compound is confirmed by NMR and IR spectroscopy.