3,7-Dinitroimidazo[1,2-B]Pyridazine-6,8-Diamine: Promising Building Block for Advanced Heat-Resistant and Low Sensitive Energetic Materials DOI
Jing Feng, Jie Sun, Lei Yang

и другие.

Опубликована: Янв. 1, 2023

The construction of heat-resistant fused heterocyclic compounds are increasingly fascinating in the field energetic materials not only because it usually behaves high density but also shows excellent energy, thermal stability and low sensitivity. In present study, a novel imidazo[1,2-b]pyridazine ring-based explosive, 3,7-dinitroimidazo[1,2-b]pyridazine-6,8-diamine (4) was synthesized by three-step facile method. Compound 4 has (1.856 g•cm-3) sensitivity (IS =40 J, FS = 350 N). Meanwhile, good decomposition temperature 324°C, which is superior to conventional heat resistant explosive HNS (Td 318°C). addition, detonation performance compound (D=8336 m•s-1, P=27.25 GPa) significantly better than both TNT (D=6881 P=19.5 (D=7612 P=24.3GPa). Theoretical analysis that effect “NH2-NO2-NH2” intramolecular hydrogen bonding interaction may be main reason for causing heat-resistance imidazolopyridazine materials. results suggest promising building block candidate

Язык: Английский

Insensitive Energetic Compounds Based on Regioisomeric Nitro-Substituted Fused Triazole DOI
Na Zhu, Chengming Bian,

Fubing Yang

и другие.

Опубликована: Янв. 1, 2023

Two series of nitro-substituted fused triazole were prepared. All compounds have been fully characterized by IR, elemental analysis, 1H and 13C NMR DSC. Neutral a1 b1 exhibit quite different thermostabilities this trend has extended to their energetic salts, which could be explained the NBO analysis hydrogen bonds based on single-crystal parameters. The structures salts a2, a3 b3 also confirmed X-ray diffraction. NCI Hirshfeld surfaces performed further understand relationship between properties regioisomeric structures. new show good densities varying within 1.66-1.83 g cm-3, detonation velocities 7688-8461 m s-1 pressures 22.1-26.7 Gpa, are insensitive friction impact. High thermal stability (Td = 274 °C) combined with velocity (vD 8238 s-1) highlight promising application for salt b2 as a high-energy compound.

Язык: Английский

Процитировано

0

N-Methylene-C bridged tetrazole and 1,2,4-triazole energetic salts as promising primary explosives DOI
Lingfeng Zhang, Yu Wang, Yefeng Wang

и другие.

CrystEngComm, Год журнала: 2023, Номер 26(2), С. 143 - 152

Опубликована: Ноя. 21, 2023

New energetic salts based on N -methylene-C bridged tetrazole and triazole were developed as safe primary explosives, which are free from heavy metal ions azide groups show high energy property, good stability, reliable ignition ability.

Язык: Английский

Процитировано

0

3,7-Dinitroimidazo[1,2-B]Pyridazine-6,8-Diamine: Promising Building Block for Advanced Heat-Resistant and Low Sensitive Energetic Materials DOI
Jing Feng, Jie Sun, Lei Yang

и другие.

Опубликована: Янв. 1, 2023

The construction of heat-resistant fused heterocyclic compounds are increasingly fascinating in the field energetic materials not only because it usually behaves high density but also shows excellent energy, thermal stability and low sensitivity. In present study, a novel imidazo[1,2-b]pyridazine ring-based explosive, 3,7-dinitroimidazo[1,2-b]pyridazine-6,8-diamine (4) was synthesized by three-step facile method. Compound 4 has (1.856 g•cm-3) sensitivity (IS =40 J, FS = 350 N). Meanwhile, good decomposition temperature 324°C, which is superior to conventional heat resistant explosive HNS (Td 318°C). addition, detonation performance compound (D=8336 m•s-1, P=27.25 GPa) significantly better than both TNT (D=6881 P=19.5 (D=7612 P=24.3GPa). Theoretical analysis that effect “NH2-NO2-NH2” intramolecular hydrogen bonding interaction may be main reason for causing heat-resistance imidazolopyridazine materials. results suggest promising building block candidate

Язык: Английский

Процитировано

0