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相关概念视频

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

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.
Aldehydes and Ketones to Alkenes: Wittig Reaction Mechanism01:14

Aldehydes and Ketones to Alkenes: Wittig Reaction Mechanism

The Wittig reaction, which converts aldehydes or ketones to alkenes using phosphorus ylides, proceeds through a nucleophilic addition‒elimination process.
The reaction begins with the nucleophilic addition between a phosphorus ylide and the carbonyl compound. Due to its carbanionic character, phosphorus ylide acts as a strong nucleophile and attacks the electrophilic carbonyl group. This generates a charge-separated dipolar intermediate called betaine. The negatively charged oxygen atom and...
Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...

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相关实验视频

Updated: Jun 4, 2026

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
07:14

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

用酸盐功能化多氧酸盐构建的银 (I) -乙化集群.

Yun-Peng Xie1, Thomas C W Mak

  • 1Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People's Republic of China.

Journal of the American Chemical Society
|February 26, 2011
PubMed
概括
此摘要是机器生成的。

研究人员合成了新的白银-乙烯酸集群,其核心是氧化瓦纳. 这些复杂的结构由模板离子稳定,为先进材料展示复杂的分子架构.

更多相关视频

Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods

Published on: October 6, 2023

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
10:42

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines

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Last Updated: Jun 4, 2026

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods

Published on: October 6, 2023

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
10:42

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines

Published on: January 3, 2018

科学领域:

  • 无机化学 无机化学
  • 材料科学 材料科学 材料科学
  • 超分子化学 超分子化学

背景情况:

  • 银(I) - 烯化物复合物代表了一类具有多种结构可能性的化合物.
  • 氧化物多面体,例如[((t) BuPO((3)) (((4) V(4) O(8) ](4-) 单元,可以作为集群合成中的多功能构建块.
  • 模板离子的结合对于指导复杂无机框架的自我组装至关重要.

研究的目的:

  • 为了合成和表征新的中性白银(I) -烯化集群.
  • 调查[((t) BuPO ((3)) ((4) V ((4) O ((8))) ((4-)) 单元作为集群形成中的外组件的作用.
  • 探索在银-烯化框架内通过变化的模板离子实现的结构多样性.

主要方法:

  • 银的合成 (I) - 烯化集群.
  • 使用X射线晶体学进行表征.
  • 对集群组成和结构特征的分析.

主要成果:

  • 隔离和结构阐明两个中性白银(I) -烯化集群: {(NO(3)) (((2)@Ag(16) (((CCPh) (((4) ((((t) BuPO(3)) (((4) V ((4) O ((8)) ((2)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
  • [((t) BuPO ((3)) ((4) V ((4) O ((8))) ((4-)) 单元已成功地作为两个集群的整体外组件进行了整合.
  • X射线晶体学揭示了由酸盐 (NO) 和瓦纳酸盐 (O) 占据的独特的中央腔.

结论:

  • 这项研究证明了复杂的白银-烯化集群的成功构建,其核心是氧化瓦纳.
  • 这些发现突显了[{t) BuPO{3}{4}V{4}O{8}{4-}) 单元在形成复杂的超分子结构中的适应性.
  • 模板离子的性质显著影响最终的集群结构和组成.