Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(24), С. 14801 - 14808
Опубликована: Янв. 1, 2024
The P 2 1 c -C(N 5 ) 4 can build nitrogen cycle between N≡N triple bonds and N–N single to achieve energy storage release, receive considerable interest in green sustainable materials.
Язык: Английский
Energetic Materials Frontiers, Год журнала: 2020, Номер 1(3-4), С. 123 - 135
Опубликована: Дек. 1, 2020
Molecular perovskite energetic crystals, as an emerging family of promising practicable materials, have attracted increasing attentions in the past few years. Different from mainstream strategies focusing on intra-molecular designs and modifications fused-ring molecules/ions, molecular perovskites rely self-assembly diverse components into specified ternary crystal structures, hence generally could be prepared via easy scale-up process at a low cost. As kind salts, they some unique advantages energetic-material terms optimizing oxygen balance, pack efficiency (and density), decreasing hygroscopicity, achieve improved detonation performances meanwhile overcome technical weaknesses traditional binary salts. In this review, we summarize current findings understandings provide outlook for new opportunities brought by material towards advanced multi-component crystals.
Язык: Английский
Процитировано
57
Journal of Materials Chemistry A, Год журнала: 2020, Номер 8(25), С. 12334 - 12338
Опубликована: Янв. 1, 2020
A novel hydrogen peroxide adduct of ammonium cyclopentazolate was successfully synthesized and shows promising application potential as a green propellant component.
Язык: Английский
Процитировано
53
Chemical Engineering Journal, Год журнала: 2021, Номер 429, С. 132399 - 132399
Опубликована: Сен. 11, 2021
Язык: Английский
Процитировано
46
Engineering, Год журнала: 2020, Номер 6(9), С. 981 - 991
Опубликована: Авг. 31, 2020
The latest member of the azole family, pentazolate or cyclo-N5−, has received increased attention since its first mass-spectral detection by Christe et al. in 2002. As it is carbon- and hydrogen-free, anion can release large amounts energy while simultaneously decomposing to environmentally friendly nitrogen gas. Due these attractive qualities, cyclo-N5− related compounds are essential advancement high-energy-density materials (HEDMs) research. This review aims provide a consolidated report on all research done with focus pentazoles as energetic their experimental synthesis. Included this following: ① historical significance cyclo-N5−; ② precursors ③ synthesis routes arylpentazole precursors; ④ factors affecting stability ⑤ performances current cyclo-N5−-containing compounds; ⑥ future possible comprehensive summary understanding an effort further understand potential for adoption powerful next-generation explosive.
Язык: Английский
Процитировано
47
Chemistry - An Asian Journal, Год журнала: 2019, Номер 14(16), С. 2877 - 2882
Опубликована: Июль 9, 2019
Abstract Three energetic salts of cyclo ‐N 5 − were synthesized via a metathesis reaction barium pentazolate and sulfates which was driven by the precipitation BaSO 4 . All characterized single‐crystal X‐ray diffraction, infrared (IR), 1 H 13 C multinuclear NMR spectroscopies, thermal analysis (TGA DSC), elemental analysis. The exhibit relatively good detonation performance with low sensitivities stabilities. This new method opens door to exploring more anion‐containing high‐performance materials.
Язык: Английский
Процитировано
40
The Journal of Physical Chemistry Letters, Год журнала: 2020, Номер 11(3), С. 1030 - 1037
Опубликована: Янв. 22, 2020
Very recently, the bulk synthesis of cyclo-N5– from arylpentazole through treatment with m-chloroperbenzonic acid (m-CPBA) and ferrous bisglycinate ([Fe(Gly)2]) (Zhang, C., et al. Science 2017, 355, 374) has greatly promoted application pentazolate anion as a novel high-performance energetic material. Yet mechanism for this reaction is still unexplored. Herein we perform mechanistic studies on selective C–N bond cleavage in by using density functional theory methods. The direct activation m-CPBA was computed to be kinetically inaccessible. Instead, oxidation [Fe(Gly)2] much favorable, which leads generation high-valent iron(IV)–oxo product. Fe(IV)–oxo intermediate been examined UV–vis absorption spectra experiments further verified excited-state calculations. It found that serves key generation. Our calculations clarified details generation, factors affect production yield are discussed.
Язык: Английский
Процитировано
34
Crystal Growth & Design, Год журнала: 2021, Номер 21(8), С. 4725 - 4731
Опубликована: Июль 13, 2021
Energetic substances with layered crystal packing have been identified as the most promising next-generation high-energy materials (HEMs) due to their excellent insensitivity. The challenge, however, is how design HEMs. In this study, a novel strategy called "acceptor–donor separation" was proposed control layer-by-layer stacking of energetic molecules through directional hydrogen boding: that is, bond donor and acceptor are located in different segments at least one them has conjugated planar structure, which will enable fragments be infinitely extended two-dimensional plane form target structure. experimental results showed three exemplary designed by using possess expected structures, confirmed single-crystal X-ray diffraction, demonstrating robustness strategy. Moreover, as-synthesized HEMs all exhibit insensitivity (impact sensitivity IS > 40 J; friction FS 360 N), affording safety far beyond those powerful use today. Especially, hydroxylammonium salts good detonation performance (detonation velocity D = 8924 m s–1; pressure P 36.9 GPa) comparable 1,3,5-trinitro-1,3,5-triazine (RDX), high explosives
Язык: Английский
Процитировано
28
Energetic Materials Frontiers, Год журнала: 2022, Номер 3(3), С. 122 - 127
Опубликована: Июль 16, 2022
Язык: Английский
Процитировано
22
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(11)
Опубликована: Янв. 2, 2024
Abstract As the fourth full‐nitrogen structure, pentazolate anion ( cyclo ‐N 5 − ) was highly coveted for decades. In 2017, first air‐stable non‐metal salt, (N 6 (H 3 O) (NH 4 Cl, obtained, representing a milestone in this field. latest member of azole family, is comprised five nitrogen atoms. Although significant attention has been paid to potential as an energetic material, its poor thermostability hinders any practical application. However, unique ring structure and multiple coordination capability provide platform fabrication various structures, among which pentasil‐zeolite topologies are most intriguing. addition, introduction structure‐directing auxiliaries enables self‐assembly diverse topological architectures, potentially imparting with impact wide‐ranging areas chemistry topology. minireview, different based on metal‐pentazolate frameworks evaluated. To date, three zeolitic zeolite‐like have reported, namely melanophlogite (MEP), chibaite (MTN), unj topologies. The MEP topology consists two nanocages, Na 20 N 60 24 , whereas MTN contains 28 80 nanocages. Furthermore, features homochiral channels consisting helical chains. Various possible strategies obtaining additional also discussed.
Язык: Английский
Процитировано
5
Crystal Growth & Design, Год журнала: 2020, Номер 21(1), С. 3 - 15
Опубликована: Ноя. 24, 2020
The subject of energetic crystals has been significantly enriched in the past several decades, with number rising rapidly. Meanwhile, some new types have appeared, such as extended solids, ionic salts, metal organic frames, cocrystals, metallic hydrogen, and perovskites. They may dazzle us but give rise to a difficulty understanding these compounds work achieve general knowledge from them design ones; thus, it becomes interesting crucial categorize crystals. In this work, on basis primary constituent parts their interactions crystal, we classify experimentally observed theoretically predicted into five types, including molecular atomic mixed-type crystal; i.e., cover all crystal exhibit high diversity. By categorization, will become much easier understand predict various formation energy release mechanisms Furthermore, dependence level type is summarized, content increase follows an order mixed crystal. general, highly should exist under pressure, while moderate or low can common conditions. Thus, presents overall perspective structures materials makes increasing roughly readily understandable, despite diversity complexity structures.
Язык: Английский
Процитировано
25