Unsymmetrical Functionalization of Bis-1,2,4-triazoles Skeleton: Exploring for Promising Energetic Materials DOI
Tingou Yan,

Hongwei Yang,

Guangbin Cheng

et al.

ACS Applied Energy Materials, Journal Year: 2020, Volume and Issue: 3(7), P. 6492 - 6500

Published: June 3, 2020

Unsymmetrical functionalization of bis-1,2,4-triazoles was attempted, and a series nitrogen/oxygen-rich energetic materials were designed synthesized in this study. Compared with previously reported symmetrical bis-1,2,4-triazole derivatives (iv v), both unsymmetrically functionalized (3 7) work possess improved safety properties (impact sensitivities: 22 J (3) 11 (7); friction >360 N 250 (7)). Meanwhile, the detonation performance 3 apparently compared C-nitrated compound iv. These features indicate that unsymmetrical would be favorable strategy to construct high energy safety. Moreover, N-trinitromethyl-functionalized 5 possesses density (1.92 g cm–3), positive oxygen balance (+25.1%), desirable similar HMX, higher specific impulse (Isp = 265.1 s) than ADN, suggesting its superiority as highly oxidizer.

Language: Английский

Challenging the limits of the oxygen balance of a pyrazole ring DOI
Wenjin Zhang, Yiling Yang,

Yuchuan Wang

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138609 - 138609

Published: Aug. 12, 2022

Language: Английский

Citations

34
Unraveling the direct effect of hydrogen bonding on density and thermostability of energetic materials through isomerism DOI
Qi Sun, Weixing Chen, Ning Ding

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 444, P. 136539 - 136539

Published: April 22, 2022

Language: Английский

Citations

33
A green oxidizer based on 1,2,3-triazole with a high oxygen balance of +23.3%: a promising replacement of ammonium perchlorate in solid propellants DOI Creative Commons

Pinxu Zhao,

Long Chen, Qingzhong Zhang

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(23), P. 13682 - 13688

Published: Jan. 1, 2024

A triazole compound (JY-23) with the largest number of nitro groups (seven groups) was designed and synthesized.

Language: Английский

Citations

7
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
Azasydnone – novel “green” building block for designing high energetic compounds DOI
Igor L. Dalinger,

Olga V. Serushkina,

Nikita V. Muravyev

et al.

Journal of Materials Chemistry A, Journal Year: 2018, Volume and Issue: 6(38), P. 18669 - 18676

Published: Jan. 1, 2018

The azasydnone unit is a promising explosophoric block for future generations of highly thermostable and dense energetic materials.

Language: Английский

Citations

57
1,2,4‐Oxadiazole‐Bridged Polynitropyrazole Energetic Materials with Enhanced Thermal Stability and Low Sensitivity DOI
Tingou Yan, Guangbin Cheng, Hongwei Yang

et al.

ChemPlusChem, Journal Year: 2019, Volume and Issue: 84(10), P. 1567 - 1577

Published: Oct. 1, 2019

A family of mono or di(1,2,4-oxadiazole)-bridged polynitropyrazole derivatives with C-nitro/N-nitro functionalities is reported. All compounds were fully characterized by IR, NMR (1 H, 13 C), elemental analysis and differential scanning calorimetry (DSC). The solid-state structure features further investigated X-ray diffraction. Of these, 3,5-bis(3,4-dinitro-1H-pyrazol-5-yl)-1,2,4-oxadiazole (3 a) 5,5'-bis(3,4-dinitro-1H-pyrazol-5-yl)-3,3'-bi(1,2,4-oxadiazole) b) possess high thermal stability a: Tdec =274 °C; 3 b: =272 °C), sensitivity (IS >30 J, FS >360 N) comparable detonation properties Dv =8741 m s-1 , P=34.0 GPa; =8685 P=33.4 Gpa) to RDX. In addition, 3,5-bis(4-nitro-1H-pyrazol-3-yl)-1,2,4-oxadiazole (4 5,5'-bis(4-nitro-1H-pyrazol-3-yl)-3,3'-bi(1,2,4-oxadiazole) have decomposition temperature =314 4 =317 low >40 J; FS>360 superior performances =8027 P=26.4 =7991 P=25.2 than conventional heat-resistant explosive hexanitrostilbene (HNS: =318 IS=5 FS=240 N; =7612 P=24.3 GPa), thus suggesting their potential application as explosives.

Language: Английский

Citations

50
Pressure DSC for energetic materials. Part 2. Switching between evaporation and thermal decomposition of 3,5-dinitropyrazole DOI
Margarita V. Gorn, Константин А. Моногаров, Igor L. Dalinger

et al.

Thermochimica Acta, Journal Year: 2020, Volume and Issue: 690, P. 178697 - 178697

Published: June 27, 2020

Language: Английский

Citations

41
Novel energetic CNO oxidizer: Pernitro-substituted pyrazolyl-furazan framework DOI Creative Commons
Igor L. Dalinger, Tatyana K. Shkineva,

Ирина А. Вацадзе

et al.

FirePhysChem, Journal Year: 2021, Volume and Issue: 1(2), P. 83 - 89

Published: May 2, 2021

There is a need for dense energetic oxidizers whose composition restricted to carbon, hydrogen, nitrogen and oxygen atoms as chlorine-free alternative current of materials such explosives, propellants pyrotechnics. High heterocyclic frameworks containing trinitromethyl units are an attractive increasingly important class oxygen-rich compounds. Herein, the first time, synthetic method has been developed preparation new (pyrazole-3-yl)furazan framework bearing nitro group in furazan ring. From this framework, 3-nitro-4-(4-nitro-1-(trinitromethyl)-1H-pyrazol-3-yl)furazan (15) 3-(3,4-dinitro-1-(trinitromethyl)-1H-pyrazol-5-yl)-4-nitrofurazan (16) have produced. The combination positive enthalpy formation, high density, favorable physical thermal properties, reasonable sensitivity with promising theoretical performance these compounds offers not only fundamental interest, but also potential practical applications, example, candidates environmentally benign rocket propellants.

Language: Английский

Citations

41
Facile synthesis of MXene-supported copper oxide nanocomposites for catalyzing the decomposition of ammonium perchlorate DOI

Keding Li,

Yuqing Lei,

Jun Liao

et al.

Inorganic Chemistry Frontiers, Journal Year: 2021, Volume and Issue: 8(7), P. 1747 - 1761

Published: Jan. 1, 2021

MXene-supported CuO nanocomposites were synthesized by ice crystal templating and could effectively reduce the HTD temperature increase heat release of AP. A possible mechanism for excellent catalytic performance was also proposed.

Language: Английский

Citations

36
Design and Synthesis of Nitrogen‐Rich Azo‐Bridged Furoxanylazoles as High‐Performance Energetic Materials DOI
Alexander А. Larin, Alexander V. Shaferov, Alexander S. Kulikov

et al.

Chemistry - A European Journal, Journal Year: 2021, Volume and Issue: 27(59), P. 14628 - 14637

Published: July 29, 2021

A series of novel energetic materials comprising azo-bridged furoxanylazoles enriched with functionalities was designed and synthesized. These high-energy were thoroughly characterized by IR multinuclear NMR (1 H, 13 C, 14 N) spectroscopy, high-resolution mass spectrometry, elemental analysis, differential scanning calorimetry (DSC). The molecular structures representative amino azo oxadiazole assemblies additionally confirmed single-crystal X-ray diffraction powder diffraction. comparison contributions explosophoric moieties into the density revealed that furoxan 1,2,4-oxadiazole rings are densest motifs while substitution azide fragments on nitro ones leads to an increase density. Azo bridged have high nitrogen-oxygen contents (68.8-76.9 %) thermal stability. synthesized compounds exhibit good experimental densities (1.62-1.88 g cm-3 ), very enthalpies formation (846-1720 kJ mol-1 and, as a result, excellent detonation performance (detonation velocities 7.66-9.09 km s-1 pressures 25.0-37.7 GPa). From application perspective, parameters exceed those benchmark explosive RDX, combination acceptable friction sensitivity azo(1,2,4-triazolylfuroxan) make it promising potential alternative PETN.

Language: Английский

Citations

35