塔离子盐的结构和特性
Yang Zhu1, Peng Zhang1, YuQin Chu1
1College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
Journal of molecular modeling
|April 1, 2025
概括
这项研究探讨了13种无水塔离子盐,发现PA-9与TNT和RDX相比表现出优越的形成热和引爆性能. 阴离子替代剂显著影响能量输出和稳定性, -NH2和 -OH组增强性质.
科学领域:
- 计算化学是一种计算化学.
- 材料科学是一种材料科学.
- 能量材料是一种能量材料.
背景情况:
- 研究了13种无水薄醇非金属离子盐 (PA-1至PA-13).
- 与已建立的能量材料 (如TNT和RDX) 的性能进行比较.
- 利用周期密度函数理论进行系统分析.
研究的目的:
- 系统地研究13种无水塔离子盐的特性.
- 评估它们作为高能材料的潜力.
- 了解结构-属性关系,特别是阴离子替代物的影响.
主要方法:
- 使用高斯 16. 使用密度函数理论 (DFT) 计算.
- 使用B3LYP-D3/6-311G**的优化结构.
- 使用M06-2X-D3/def2-TZVPP进行单点能量计算.
主要成果:
- 醇离子盐 (PA-1至PA-13) 的形成热度比TNT和RDX的形成热度更高.
- PA-9 显示出极好的引爆性能 (9.41 公里/秒) 和形成热量 (1357.56 kJ/mol).
- 诸如-NH2和-OH之类的子替代剂提高了能量和性能,而-COOH则降低了它们. -OH增强了对-NH2的反应性,而增加的-NH2或碳基则降低了它.
结论:
- 醇离子盐,特别是PA-9,显示出作为下一代高能材料的巨大潜力.
- 阴离子设计对于调整能量特性和稳定性至关重要.
- -NH2和-OH替代剂有利于提高性能,而阴离子大小影响灵敏度和稳定性.
更多相关视频
08:46Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
Published on: November 22, 2016
7.7K
06:35Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
8.0K
相关概念视频
02:42Ionic Crystal Structures
14.0K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.0K
02:48Ionic Bonding and Electron Transfer
39.9K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
39.9K
01:18Structure of Benzene: Molecular Orbital Model
8.6K
According to the molecular orbital (MO) model, benzene has a planar structure with a regular hexagon of six sp2 hybridized carbons. As shown in Figure 1, each carbon is bonded to three other atoms with C–C–C and H–C–C bond angles of 120°. The C–H bond length is 109 pm, and the C–C bond length is 139 pm which is midway between the single bond length of sp3 hybridized carbons (154 pm) and sp2 hybridized carbons (133 pm).
8.6K
01:18Aromatic Hydrocarbon Anions: Structural Overview
2.6K
Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
Due to the absence of continuous...
2.6K
01:18Aromatic Hydrocarbon Cations: Structural Overview
2.6K
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...
2.6K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
40.9K
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...
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...
40.9K