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- Title
In search of the most thermostable 1,1,1-trinitrocompounds: polynitroethyl-substituted sym-tetrazine and bistriazolotetrazine.
- Authors
Rudakov, Gennady F.; Sinditskii, Valery P.; Serushkin, Valery V.; Egorshev, Viacheslav Yu.; Zinchenko, Svetlana S.; Botnikova, Anastasya I.; Kalinichenko, Alexandra I.; Veselkina, Polina R.; Aksenova, Svetlana A.
- Abstract
In search of the most thermally stable 1,1,1-trinitrocompounds, several well-known and new energetic 1,2,4,5-tetrazines have been synthesized. The thermal stability of obtained compounds has been investigated by the methods of isothermal and non-isothermal kinetics. The introduction of the OCH2 or NHCH2 bridge between the heterocycle and the trinitromethyl moiety has been confirmed to result in a significant increase in thermal stability. An increase in stability is accompanied by a decrease in the C–NO2 bond length by 0.025–0.029 Å. An additional increase in the thermal stability of 1.1,1-trinitro derivatives is possible due to the creation of high-melting compounds, the decomposition of which proceeds before melting. Trinitroethylamine derivatives are most preferred due to the strong hydrogen bonds of the NH group. However, in some cases, the actual stability of a substance is reduced by the appearance of autocatalysis. On the basis of experimental data of manometry, analysis of condensed decomposition products by HPLC and IR spectroscopy, a mechanism for the decomposition of 1,1,1-trinitrocompounds was proposed. The compounds studied were found to have favorable detonation properties, which were close to those of RDX, a commonly used explosive. At the same time, some of the obtained polynitro compounds have increased burning rates in comparison with the known nitramines HMX and RDX.
- Subjects
THERMAL stability; CHEMICAL bond lengths; EXPLOSIVES; HYDROGEN bonding; AUTOCATALYSIS; FURAZANS; CYCLONITE
- Publication
Journal of Thermal Analysis & Calorimetry, 2024, Vol 149, Issue 5, p2119
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-023-12795-w