For an energetic molecule with a definite elemental composition, the substituent type and position are most important factors to influence its detonation performance mechanical sensitivities. In this work, two pairs of FOX-7-like isomers based on (

The triazole moiety with a high heat of formation and nitrogen content has been investigated for decades in combination other nitrogen-rich heterocyclic rings the field energetic materials. A novel strategy construction both thermally stable mechanically insensitive materials using multi-aminotriazole system is now described. Using this methodology, two series were created on basis duo triazoles, 5-amino-3-(3,4-diamino-1,2,4-triazol-5-yl)-1H-1,2,4-triazole (TT), trio...

Abstract The search for lead‐free, environmentally friendly explosives has been a highly challenging task in the field of energetic materials. Herein, an salt, potassium 5‐(2,2‐diamino‐1‐nitrovinyl)tetrazolate ( 2 ) was prepared by combination tetrazole containing anion and cation with outstanding initiating performance. It fully characterized IR spectrum, NMR elemental analysis. structure further determined single‐crystal X‐ray diffraction exhibited high density, heat formation, excellent...

A coplanar and insensitive energetic pentazolate salt was effectively synthesized from a twisted molecule by protonation hydrogen bonding assembly.

Exploring derivatives of FOX-7 to improve the thermal stability has been an important project in field energetic materials. Creating vicinal nitro/amino arrangement and planar structure are most common strategies used In this research, a carbonyl substituted pyrimidine (4) with was synthesized. It showed ultrahigh onset decomposition temperature 328 °C, which is higher than commonly heat-resistant explosive hexanitrosilbene (HNS) (Td = 322 °C). 4 also exhibited extremely low mechanical...

Improving the detonation performance of tetranitromethane (TNM) by introducing energetic moieties is an intriguing area in field materials. Incorporation a mono nitrogen-rich skeleton into TNM usually results unsatisfactory performance. Now, we reported design and synthesis advanced TNM-like molecule (3) containing triazole nitro-triazinane moieties. In addition, two its analogues (4 5) were also obtained. Taking advantage positive heat formation brought triazinane rings high-density...

Pursuing the structural planarization of energetic materials is an efficient method for achieving improved performance. Although many planar molecules have been prepared so far, innovation advanced explosives still relies on scientific intuition, experience and trial-and-error researchers. Now, a triazole-induced strategy proposed based regulation aromaticity, charge distribution, hydrogen bonds. The incorporation triazole ring into non-planar molecule 5-amino-1-nitriminotetrazole (VII)...

Forming hydrogen bond interactions between a nitro group (Tz-FOX), tetrazole moiety and amino groups (G, AG, TAG) led to three nitrogen-rich energetic salts (<bold>2</bold>, <bold>3</bold>, <bold>5</bold>).

Abstract Lead‐free, eco‐friendly primary explosive which can replace lead azide (LA) has been a long‐lasting challenge. Hereby, new candidate copper(I) 5‐(2,2‐diamino‐1‐nitrovinyl)tetrazolate (CTX) was synthesized through mild metathesis reaction by bridging nitrogen‐rich heterocycles with Cu(I) centers. The structure characterized IR spectrum, NMR X‐ray diffraction, and elemental analysis. linear reinforced condensed packing pattern of CTX to its high density (2.16 g cm −3 ) low...

Abstract The introduction of nitroamino groups onto a nitrogen-rich heterocyclic skeleton is an efficient method for constructing high-performance energetic compounds. In this work, the nitroamino-functionalized compound 4-(5-amino-1,3,4-oxadiazol-2-yl)-N,N′-dinitro-1H-pyrazole-3,5-diamine was synthesized in yields up to 83%. addition, its salts were also prepared. All these compounds characterized by NMR and IR spectroscopy and, two cases, single-crystal X-ray diffraction. difference...

The synthesis of energetic compounds with high detonation performance and low sensitivity has always been the goal material field. However, synthetic chemistry also plays a crucial role since it can provide new insights for designing molecules understanding reaction pathways. In this study, two unexpected 2 3 were prepared from reactions 7-amino-8-nitrotetrazolo [1,5-c]pyrimidine (1) acetone under an acidic condition different nitration reagents, respectively. Their structures determined...

The exploration of energetic derivatives 1,1-diamino-2,2-dinitroethylene (FOX-7) is a feasible strategy for attaining high-performance materials. Of all the extant types derivatives, hydrazino-substituted FOX-7 have received most extensive attention because their excellent detonation performance. However, applications these are restricted by relatively high mechanical sensitivities. In this study, reaction between 1,1-diamino-2-nitro-2-(1H-triazol-5-yl)ethene (Tri-FOX) and hydrazine...

Azo-bridged FOX-7 derivatives with ultra-high theoretical detonation performance were seen as potential high-performance energetic materials. So far, most of the researches focused on diverse oxidation reactions involving 1,1-diamino-2,2-dinitroethene (FOX-7) a starting material, which usually results in undesirable products. In this paper, by replacing substrate from to its analogous 1,1-diamino-2-nitro-2-(1-amino-1H-tetrazol-5-yl) ethene (1), three unexpected halogenated-substituted...