基于Zwitterionic化的pyrazolo-triazole的高性能能量材料
Parasar Kumar1, Navaneet Kumar1, Vikas D Ghule2
1Energetic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, Uttar Pradesh, India. srinivasd@iitk.ac.in.
概括
合成了新的富含的化能量材料. 化合物3和4显示出高爆炸速度和出色的安全性质,为下一代热稳定的能量材料提供了潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 能量材料对于各种应用至关重要.
- 开发具有增强性能和安全性的新能源材料是一个正在进行的研究领域.
- 富含的化合物由于其高热度的形成和燃烧产品而引起了特别的兴趣.
研究的目的:
- 为了合成和描述一系列新的富含的化能量材料.
- 为了评估合成化合物的引爆性能,灵敏度和热稳定性.
- 探索这些材料作为下一代能量化合物的潜力.
主要方法:
- 从廉价的原材料合成富含的化能量材料.
- 使用1H和13C的NMR,IR光谱和元素分析进行了完整的表征.
- 通过单晶X射线衍射 (SCXRD) 阐明zwitterionic化合物2的结构.
- 使用差分扫描热量计 (DSC) 的热量分析.
- 评估爆炸速度,摩擦灵敏度和冲击灵敏度.
主要成果:
- 成功合成了几种富含的化能量材料.
- 化合物3和4表现出极好的爆炸速度 (8956和9163米/秒).
- 这些化合物表现出对摩擦 (>360 N) 和冲击 (10 J) 的高不敏感性.
- 对化合物3和4 (171-262 °C) 观察到中等到优良的热稳定性.
- 兹维特里昂化pyrazolo-triazole化合物2及其有活力的盐显示出了显著的性能.
结论:
- 合成的富含的化能量材料提供了高性能和安全的有前途的组合.
- 化合物2及其能量盐代表了一种新型的热稳定的能量材料.
- 这些发现有助于为未来的应用开发先进的能量材料.
更多相关视频
相关概念视频
Trends in Lattice Energy: Ion Size and Charge
23.9K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
23.9K
Aromatic Hydrocarbon Cations: Structural Overview
2.8K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
Removing one hydrogen from the intervening CH2 group...
2.8K
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
2.9K
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
2.9K
Thermal and Photochemical Electrocyclic Reactions: Overview
2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.6K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
42.6K
Valence Bond Theory
8.6K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.6K


