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相关概念视频

Hydrogen Bonds00:26

Hydrogen Bonds

121.1K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
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Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

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sp3d and sp3d 2 Hybridization
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Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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Structure of Benzene: Molecular Orbital Model01:18

Structure of Benzene: Molecular Orbital Model

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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).
9.0K
Metallic Solids02:37

Metallic Solids

18.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Molecular Models02:00

Molecular Models

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Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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相关实验视频

Updated: Jun 22, 2025

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

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一个由三个组成部分组成的键框架.

Phonlakrit Muang-Non1, Meabh K S Perry-Britton1, Lauren K Macreadie2

  • 1Research School of Chemistry, Australian National University, Canberra, ACT, Australia. Nicholas.white@anu.edu.au.

Chemical communications (Cambridge, England)
|July 4, 2024
PubMed
概括
此摘要是机器生成的。

研究人员使用特定的有机分子创建了一个多孔的键框架 (1⋅biphen⋅TP). 框架 框架 是一个框架.

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科学领域:

  • 超分子化学 超分子化学
  • 材料科学是一种材料科学.
  • 晶体学 晶体学是指结晶学.

背景情况:

  • 在材料科学中,用结合的框架至关重要.
  • 控制多组件框架的组装是具有挑战性的.
  • 四胺 (1^4+) 组成部分提供了独特的结合可能性.

研究的目的:

  • 为了合成和描述一个新的三元组合键框架.
  • 为了研究溶剂成分对框架形成的影响.
  • 探索有机构建块的自我组装行为.

主要方法:

  • 溶解热合成. 溶解热合成.
  • 单晶X射线衍射. 单晶X射线衍射.
  • 粉末X射线衍射.粉末X射线衍射.
  • 红外光谱学.红外光谱学.

主要成果:

  • 通过使用四胺 (1^4+),铁甲 (TP^2-) 和双-4,4'-二碳酸盐 (双^2-) 成功制备了一种多孔的三组分框架,1⋅biphen⋅TP.
  • 在乙醇/水混合物中选择性形成的框架,不论二碳酸盐过量.
  • 在纯水中,只观察到两个组成的框架,这表明溶剂导向组装.

结论:

  • 溶剂成分在指导多元组件结框架的自组装方面发挥着至关重要的作用.
  • 使用乙醇/水等混合溶剂可以形成复杂,有序的结构.
  • 这项研究提供了通过溶剂工程控制多孔材料结构的见解.