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相关概念视频

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

4.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.8K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

5.7K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
5.7K
Formation of Complex Ions03:45

Formation of Complex Ions

23.6K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.6K
Valence Bond Theory02:42

Valence Bond Theory

8.5K
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...
8.5K

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相关实验视频

Updated: Jun 30, 2025

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

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稀有锡 (III) 复合物的溶液和固态表征.

Nathan J Lin1, Matthias Zeller1, Suzanne C Bart1

  • 1H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA. sbart@purdue.edu.

Chemical communications (Cambridge, England)
|March 18, 2024
PubMed
概括
此摘要是机器生成的。

研究人员使用18-皇冠-6稳定了 (III) 酸复合物,产生了三种不同的分子结构. 这种复合物在溶液中进一步使用各种光谱方法进行了分析.

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Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

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相关实验视频

Last Updated: Jun 30, 2025

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
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Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
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科学领域:

  • 有机金属化学 有机金属化学
  • 化学 的化学
  • 化学 化学

背景情况:

  • (III) 复合物由于其独特的电子特性而引起人们的兴趣.
  • 酸盐连接体为f-块元素提供了多功能协调可能性.
  • 稳定低价值物种仍然是一个合成挑战.

研究的目的:

  • 为了合成和表征一种新型的(III) 酸盐复合物.
  • 为了研究皇冠乙烯对复合物的稳定作用.
  • 探索稳定复合体的结构多样性和解决方案行为.

主要方法:

  • 一个(III) 酸盐复合物的合成[K(DME) [4][UI2{(Si(SiMe3) 2SiMe2) 2O}] (1).
  • 复合物1与18皇冠-6稳定,形成[K(18皇冠-6) ][UI2{(Si(SiMe3) 2SiMe2) 2O}] (1皇冠).
  • 在各种条件下结晶以获得不同的分子结构.
  • 使用1H,13C和29Si的NMR光谱学和电子吸收光谱学进行溶液状态的表征.

主要成果:

  • 成功合成和分离 (III) 酸复合物 1.
  • 形成了18皇冠-6稳定复合体1皇冠.
  • 通过结晶识别三个不同的分子结构.
  • 通过光谱技术确认复合物的稳定性和溶液中的表征.

结论:

  • 添加18-皇冠-6有效地稳定了 (III) 酸复合物.
  • 可以获得稳定复合物的多重晶体形式,表明结构灵活性.
  • 光谱数据为溶液状态中的电子结构和结合提供了洞察力.