内部分子键有助于构建平面三环结构,用于不敏感和高度恒温的能量材料
Yubing Liu1,2, Jie Li1,2, Jinxiong Cai1,2
1School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China.
International journal of molecular sciences
|April 13, 2024
概括
研究人员使用简单的两步方法合成了三种新的能量化合物,ATDT,ATNT和ATDNP. 这些化合物表现出高稳定性和良好的爆炸性能,这是由于它们的平面三环结构和键.
科学领域:
- 能量材料科学 能量材料科学
- 有机合成 有机合成
- 晶体工程 晶体工程
背景情况:
- 在能量材料开发中,安全至关重要.
- 具有增强稳定性和性能的新型化合物至关重要.
- 三环结构为改善能量特性提供了潜力.
研究的目的:
- 为了合成和描述三种新的三环能量化合物.
- 研究分子结构和能量特性之间的关系.
- 建立一个设计稳定,高性能能量材料的模型.
主要方法:
- 采用了一个简单的两步合成路线.
- 描述涉及分子平面性,晶体包装和分子间相互作用 (键,π-π相互作用) 的分析.
- 评估了安全性和性能指标,包括冲击灵敏度 (IS),摩擦灵敏度 (FS) 和分解温度 (Td).
主要成果:
- 三种三环能量化合物 (ATDT,ATNT,ATDNP) 已成功合成.
- 内分子键导致了极好的分子平面性和规律的晶体包装.
- 化合物表现出对外部刺激的不敏感性 (IS > 60 J,FS = 360 N).
- ATNT和ATDNP显示了高分解温度 (分别为361.1°C和317.0°C) 和良好的爆炸性能.
结论:
- 平面三环结构,通过分子间键稳定,是这些化合物的优良稳定性的关键.
- 这种结构图案是设计基于多重异环的新型,高度稳定的能量材料的有价值模型.
- 合成的化合物代表了安全有效的能量材料领域的重大进步.
更多相关视频
相关概念视频
01:18Aromatic 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
02:11Conformations of Cyclohexane
12.5K
Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts non-planar chair and boat conformations.
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
12.5K
01:28Stability of Conjugated Dienes
3.4K
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
3.4K
02:30Stability of Substituted Cyclohexanes
12.6K
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial interactions.
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
12.6K
02:02Chair Conformation of Cyclohexane
14.6K
The chair conformation is the most stable form of cyclohexane due to the absence of angle and torsional strain. The absence of angle strain is a result of cyclohexane’s bond angle being very close to the ideal tetrahedral bond angle of 109.5° in its chair conformer. Similarly, the torsional strain is also absent owing to the perfectly staggered arrangement of bonds.
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this...
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this...
14.6K
02:29Conformations of Cycloalkanes
11.8K
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused by the deviation of bond angles from the ideal 109.5° tetrahedral value for sp3 hybridized carbons. However, while cyclopropane and cyclobutane are strained, as expected from their highly compressed bond angles, cyclopentane is more strained than predicted, and cyclohexane is virtually strain-free. Hence, Baeyer’s theory that...
11.8K