New form of high energy primary explosive: Dual structure composed of ionic salt-based coordination polymers

Chemical Engineering Journal, Год журнала: 2023, Номер 457, С. 141267 - 141267

Опубликована: Янв. 2, 2023

Язык: Английский

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Nitroimino as an energetic group in designing energetic materials for practical use, a tautomerism from nitroamino

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(26), С. 13876 - 13888

Опубликована: Янв. 1, 2023

Hydrogen transfer from nitroamino to nitroimino promotes density, energy and safety of energetic materials suggesting excellent application prospects in designing next generation high density materials.

Язык: Английский

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Combination of Tetrazole and 4-Azido-pyrazolotriazine Oxide: Balance of High Nitrogen, Energy, and Safety

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

Energetic materials containing a pyrazolotriazine oxide skeleton have the potential for high performance. However, research on is very limited due to inherent ring system instability and synthetic approaches. In this paper, APTO OPTO with combination of high-nitrogen tetrazole promising azido-pyrazolotriazine been synthesized. Of these, its energetic salts exhibit excellent detonation properties (Dv > 8220 m s–1; P 26.50 GPa). Surprisingly, exhibits performance = 8913 32.43 GPa) comparable that RDX.

Язык: Английский

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Catalytic synthesis of tetrazoles by a silica supported Zn(II) coordination compound containing azide ligand

Journal of Molecular Structure, Год журнала: 2023, Номер 1281, С. 135120 - 135120

Опубликована: Фев. 10, 2023

Язык: Английский

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Combination of Nitrogen-Rich Skeleton and Coordination Group: Synthesis of a High-Energy Primary Explosive Based on 1H-Tetrazole-5-Carbohydrazide

Defence Technology, Год журнала: 2023, Номер 31, С. 271 - 277

Опубликована: Фев. 25, 2023

The high energy coordination compounds Cu(TZCA)2(ClO4)2 (ECCs-1) was prepared by 1H-tetrazole-5-carbohydrazide (TZCA) with a skeleton and strong ability group. At the same time, reaction activity of ligand explored, single crystal structure it intermediate were obtained. structures all substances characterized IR EA. And composition ECCs-1 are confirmed ESP, AC, SEM ICP-OES. Physical chemical properties tests show that has an acceptable thermal stability (Td = 177°C) extremely sensitive mechanical stimulation (IS 1 J, FS 5 N). comprehensive performance test results excellent initiation ability. In addition, decomposition mechanism is explored from two aspects experiment theoretical calculation.

Язык: Английский

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Highly Dense N–N-Bridged Dinitramino Bistriazole-Based 3D Metal–Organic Frameworks with Balanced Outstanding Energetic Performance

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Апрель 10, 2024

Due to the inherent conflict between energy and safety, construction of energetic materials or metal–organic frameworks (E-MOFs) with balanced thermal stability, sensitivity, high detonation performance is challenging for chemists worldwide. In this regard, in recent times self-assembly ligands (high nitrogen- oxygen-containing small molecules) alkali metals were probed as a promising strategy build high-energy excellent density, insensitivity, performance. Herein, based on nitrogen-rich N,N′-([4,4′-bi(1,2,4-triazole)]-3,3′-dial)dinitramide (H2BDNBT) ligand, two new environmentally benign E-MOFs including potassium [K2BDNBT]n (K-MOF) sodium [Na2BDNBT]n (Na-MOF) have been introduced characterized by NMR, IR, TGA-DSC, ICP-MS, PXRD, elemental analyses, SCXRD. Interestingly, Na-MOF K-MOF demonstrate solvent-free 3D dense having crystal densities 2.16 2.14 g cm–3, respectively. Both show velocity (VOD) 8557–9724 m/s, pressure (DP) 30.41–36.97 GPa, positive heat formation 122.52–242.25 kJ mol–1, insensitivity mechanical stimuli such impact friction (IS = 30–40 J, FS > 360 N). Among them, has (9724 m/s) superior that conventional explosives. Additionally, both are highly heat-resistant, higher decomposition (319 °C 293 Na-MOF) than traditional explosives RDX (210 °C), HMX (279 CL-20 (221 °C). This stability ascribed extensive structure strong covalent interactions BDNBT2– K(I)/Na(I) ions. To best our knowledge, first time, we report dinitramino-based stable secondary explosives, may serve next-generation high-energy-density material replacement presently used thermally RDX, HNS, HMX, CL-20.

Язык: Английский

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A Dihydrazone as a Remarkably Nitrogen-Rich Thermostable and Insensitive Energetic Material

Organic Letters, Год журнала: 2023, Номер 25(32), С. 6082 - 6086

Опубликована: Авг. 9, 2023

Hydrogen bonds (H-bonds) in energetic compounds have a very pronounced effect on physicochemical properties such as density, thermal stability, sensitivity, and solubility. Now strategy to synthesize nitrogen-rich materials with overall good properties, which stem from the synergetic effects of inter- or intramolecular H-bonds, is reported. 1,2-Dihydrazono-1,2-di(1H-tetrazol-5-5-yl)ethane (4), new thermostable insensitive material, obtained reaction dioxime (2) hydrazine hydrate. The exchange oxime (NOH) hydrazone (NNH2) functionality results reduced acidic character low solubility water, make it remarkably suitable for practical use. While detonation velocity 4 comparable RDX, has an advantage high nitrogen content (76%) stability (275 °C) toward external stimuli.

Язык: Английский

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Study on Primary Explosive: Cu(ClO₄)₂-Based Energetic Coordination Compounds as a Template

Crystal Growth & Design, Год журнала: 2023, Номер 23(8), С. 5528 - 5534

Опубликована: Июнь 27, 2023

In order to study the design and preparation of new coordination primary explosive, influence ligand on performance was explored. Using low-energy, low-nitrogen pyrrole as skeleton hydrazide group target, 1H-pyrrole-2-carbohydrazide (PRCA) designed, two ECCs [Cu(PRCA)2(H2O)(ClO4)]ClO4·C2H5OH (ECCs-1·C2H5OH) [Cu(PRCA)2(H2O)(ClO4)]ClO4·2H2O (ECCs-1·2H2O) were prepared, [Cu(PRCA)2(H2O)(ClO4)]ClO4 (ECCs-1) obtained by a simple drying method. The structure target compound confirmed single-crystal X-ray diffraction, infrared (IR), elemental analysis (EA) characterization. Physicochemical tests show that ECCs-1 has better thermal stability (Td = 219 °C) is more sensitive impact sensitivity (IS 7 J) friction (FS 16 N). detonation prediction results velocity pressure are not high (DEXPLO 5 6.2 km s–1, PEXPLO 16.2 GPa). However, an extremely strong ability.

Язык: Английский

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Regulating the Coordination Environment by Using Isomeric Ligands: Enhancing the Energy and Sensitivity of Energetic Coordination Compounds

Inorganic Chemistry, Год журнала: 2023, Номер 62(42), С. 17417 - 17424

Опубликована: Окт. 12, 2023

Transforming the energy storage structure is an effective approach to achieve a balance between detonation performance and sensitivity of energetic compounds, with goal high low sensitivity. Building upon previous work, this study employed isomeric compound 1H-pyrazole-3-carbohydrazide (3-PZCA) as ligand creatively designed coordination (ECC) Ag(3-HPZCA)2(ClO4)3 (ECC-1). It novel material dual ionic salts which represents first report such in Ag(I)-based ECCs. With its unique structures, ECC-1 exhibits larger [ClO4-] content, higher oxygen constant (OB = 0%), superior mechanical (IS 13 J FS 40 N). Theoretical calculations indicate that has compared work. Furthermore, explosive experiment testing results demonstrate it can be ignited by lower-threshold lasers possesses excellent initiation capability power, making suitable not only primary but also secondary explosive.

Язык: Английский

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Facile synthesis of thermally stable tetrazolo[1,5-b][1,2,4]triazine substituted energetic materials: synthesis and characterization

Dalton Transactions, Год журнала: 2022, Номер 52(3), С. 747 - 753

Опубликована: Дек. 13, 2022

Various thermally stable energetic materials with high nitrogen content, low sensitivity and better detonation performance were synthesized. The versatile functionalization of 1,2,4-triazine involving the introduction oxadiazole tetrazole is discussed. All compounds fully characterized using IR, multinuclear NMR spectroscopy, elemental analysis, high-resolution mass spectrometry. Compounds 2, 3, 9 12 further verified single-crystal X-ray analysis. Compound can be considered a melt-cast explosive due to its lower onset melting temperature (112 °C). velocity, pressure, density, heat formation all synthesized range between 7056 8212 m s-1, 17.57 23.78 GPa, 1.70 1.81 g cm-1, 43 644 kJ mol-1, respectively. Due percentage (53 >72%), these molecules used in car airbag applications. thermal stability (>220 °C) sensitivity, potentially as high-performing secondary materials.

Язык: Английский

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