对以太的素键 - 原型分子和实验电子密度
Annika Schmidt1, Anna Krupp1, Johannes Kleinheider1
1Inorganic Chemistry, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany.
ACS omega
|August 19, 2024
概括
这项研究探讨了与以太的素结合,揭示了三分子聚合物和超分子链等新结构. 作为各种安排中的素键受体,以太体表现出显著的多功能性.
科学领域:
- 超分子化学 超分子化学
- 有机化学 有机化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 涉及dialkyl ethers的素结合相互作用尚未得到充分理解.
- 乙醇是常见的有机分子,具有作为素键受体的潜力.
研究的目的:
- 合成和描述第一个与素结合的非循环乙烯.
- 为了研究这些新的素结合系统的结构图案和电子特性.
主要方法:
- 使用1,4-二二四二和各种乙烯合成素结合复合物.
- 结晶实验是为了控制静态度,并获得不同的结构图案.
- 高分辨率的X射线衍射分析素键的电子细节.
主要成果:
- 获得了两种不同的结构图案:离散的三分子聚合物和氧分叉素结合的超分子链.
- 这些结构的选择性形成是通过调整静脉测量来实现的.
- X射线衍射揭示了相互作用的静电性质和以太氧中心的灵活性.
结论:
- 作为素键受体,以太表现出了显著的多功能性,形成了各种结构安排.
- 乙烯的电子特性和灵活性有助于其在素结合中的作用.
- 这些发现凸显了以太在超分子化学和自然结构设计中的低估重要性.
相关概念视频
01:04Hydrogen Bonds
8.2K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
8.2K
02:48Bond Polarity, Dipole Moment, and Percent Ionic Character
28.7K
Bond Polarity
28.7K
02:46Covalent Bonding and Lewis Structures
49.0K
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
49.0K
02:17Physical Properties of Ethers
6.9K
Overview
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
6.9K
03:37Molecular Shape and Polarity
59.9K
Dipole Moment of a Molecule
59.9K
03:51Molecular Orbital Theory II
19.0K
Molecular Orbital Energy Diagrams
19.0K