Amino-nitramino functionalized triazolotriazines: a good balance between high energy and low sensitivity DOI
Jinchao Ma, Guangbin Cheng, Xue‐Hai Ju

et al.

Dalton Transactions, Journal Year: 2018, Volume and Issue: 47(41), P. 14483 - 14490

Published: Jan. 1, 2018

Using a simple and efficient approach, series of fused triazolo-triazine compounds, namely, 2,5-dinitramide-7-amino-[1,2,4]triazolo[1,5-a][1,3,5]triazine (2) its energetic salts (4-9, 11-13), were prepared by nitration 2,5,7-triamine [1,2,4]triazolo[1,5-a][1,3,5]triazine (1) with 100% nitric acid, followed reacting the corresponding bases. All new compounds comprehensively characterized. Structures 2 4 further confirmed single crystal X-ray diffraction. Based on measured densities calculated heats formation (Gaussian 09), detonation pressures velocities evaluated EXPLO5, falling in range 21.5-34.2 GPa 7823-9313 m s-1, respectively. Notably, impact friction tests show that these are very insensitive (IS > 40 J; FS 360 N). Moreover, two representative 5 6 high decomposition temperature (5: 194 °C; 6: 199 °C), excellent properties (vD = 9313, 9088 s-1; P 33.9, 34.1 GPa) as well rarely low sensitivities N) promising candidates high-energy explosives.

Language: Английский

Synthesis of 1-(2H-tetrazol-5-yl)-5-nitraminotetrazole and its derivatives from 5-aminotetrazole and cyanogen azide: a promising strategy towards the development of C–N linked bistetrazolate energetic materials DOI
Binshen Wang,

Xiujuan Qi,

Wenquan Zhang

et al.

Journal of Materials Chemistry A, Journal Year: 2017, Volume and Issue: 5(39), P. 20867 - 20873

Published: Jan. 1, 2017

A series of C–N linked bistetrazolate nitramino compounds were successfully prepared with excellent detonation performance coupled moderate sensitivities.

Language: Английский

Citations

62
Multipurpose Energetic Materials by Shuffling Nitro Groups on a 3,3′‐Bipyrazole Moiety DOI
Dheeraj Kumar, Yongxing Tang, Chunlin He

et al.

Chemistry - A European Journal, Journal Year: 2018, Volume and Issue: 24(65), P. 17220 - 17224

Published: Sept. 19, 2018

A family of 3,3'-bipyrazole-based energetic compounds having C-NO2 /N-NO2 functionalities was synthesized by using various nitrating conditions. These nitro derivatives bipyrazole are significantly more dense and compared to the corresponding nitropyrazole analogues while maintaining desired thermal stability sensitivity. Depending on number nature groups (C-NO2 ), different classes materials, such as green primary explosives, high-performance secondary explosives heat-resistant were obtained. All thoroughly characterized IR, NMR [1 H, 13 C{1 H}, 15 N], elemental analysis, differential scanning calorimetry (DSC). Four also structurally with single-crystal X-ray diffraction studies. Heats formation detonation performance calculated Gaussian 03 EXPLO5 v6.01 programs, respectively.

Language: Английский

Citations

58
C8N12O8: A Promising Insensitive High-Energy-Density Material DOI
Qian Wang,

Yanli Shao,

Ming Lu

et al.

Crystal Growth & Design, Journal Year: 2018, Volume and Issue: 18(10), P. 6150 - 6154

Published: Sept. 11, 2018

It is desirable to consider crystal engineering in the research of energetic materials. Herein, we report synthesis, structure, and properties a promising explosive, 1,2-bis(3-(4-nitro-1,2,5-oxadiazol-3-yl)-1,2,4-oxadiazol-5-yl)diazene (5). Based on single-crystal diffraction data, 5 nearly coplanar features face-to-face wavelike stackings, thereby exhibiting an excellent density 1.92 g cm–3. Meanwhile, enthalpy as high 962.4 kJ/mol owing its extensive high-energy N–N, C–N, N–O bonds. Compound featuring such characteristic demonstrates thermal stability (Td = 256 °C), good mechanical sensitivity (IS, 18 J; FS, 220 N), superior detonation performance (D, 9240 m s–1; P, 37.5 GPa). The combination advanced security make it potential replacement for commonly used explosives RDX HMX.

Language: Английский

Citations

56
A furazan-fused pyrazole N-oxide via unusual cyclization DOI
Yongxing Tang, Chunlin He, Jean’ne M. Shreeve

et al.

Journal of Materials Chemistry A, Journal Year: 2017, Volume and Issue: 5(9), P. 4314 - 4319

Published: Jan. 1, 2017

A highly energetic fused nitrogen-rich anion, 6-nitro-pyrazolo-[3,4-c]furazanate 5-oxide, was synthesized by an unusual cyclization reaction.

Language: Английский

Citations

52
Amino-nitramino functionalized triazolotriazines: a good balance between high energy and low sensitivity DOI
Jinchao Ma, Guangbin Cheng, Xue‐Hai Ju

et al.

Dalton Transactions, Journal Year: 2018, Volume and Issue: 47(41), P. 14483 - 14490

Published: Jan. 1, 2018

Using a simple and efficient approach, series of fused triazolo-triazine compounds, namely, 2,5-dinitramide-7-amino-[1,2,4]triazolo[1,5-a][1,3,5]triazine (2) its energetic salts (4-9, 11-13), were prepared by nitration 2,5,7-triamine [1,2,4]triazolo[1,5-a][1,3,5]triazine (1) with 100% nitric acid, followed reacting the corresponding bases. All new compounds comprehensively characterized. Structures 2 4 further confirmed single crystal X-ray diffraction. Based on measured densities calculated heats formation (Gaussian 09), detonation pressures velocities evaluated EXPLO5, falling in range 21.5-34.2 GPa 7823-9313 m s-1, respectively. Notably, impact friction tests show that these are very insensitive (IS > 40 J; FS 360 N). Moreover, two representative 5 6 high decomposition temperature (5: 194 °C; 6: 199 °C), excellent properties (vD = 9313, 9088 s-1; P 33.9, 34.1 GPa) as well rarely low sensitivities N) promising candidates high-energy explosives.

Language: Английский

Citations

52