Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.2K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.2K
EDTA: Chemistry and Properties01:22

EDTA: Chemistry and Properties

3.2K
Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...
3.2K
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.6K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
1.6K
Relative Reactivity of Carboxylic Acid Derivatives01:13

Relative Reactivity of Carboxylic Acid Derivatives

3.6K
Carboxylic acid derivatives such as acid halides, anhydrides, esters, and amides undergo nucleophilic acyl substitution reactions with varying degrees of reactivity.
A key factor in assessing the reactivity of the acid derivatives is the basicity of the substituent or the leaving group. The lower the basicity of the leaving group, the higher the reactivity of the derivative. The basicity of the leaving group follows this order:
Halide ions < Acyloxy ions < Alkoxy ions < Amine ions
3.6K
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

1.1K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.1K
Valence Bond Theory02:42

Valence Bond Theory

11.1K
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...
11.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Cuttlebone-Templated Fabrication of Hygroscopic Polymer Monoliths for Efficient Solar-Driven Atmospheric Water Harvesting.

ACS macro letters·2026
Same author

Achieving (quasi)-monocoordination in metal complexes with an exceptionally bulky carbene ligand.

Chemical science·2026
Same author

Broadband slant-polarized series-fed microstrip patch antenna array based on magnetic current feeding technology.

Scientific reports·2026
Same author

Diene-Capped Carbene: Pathways to Cycloaddition, Copolymerization, and Catalysis.

Journal of the American Chemical Society·2025
Same author

Taming of Low-Valent Arsenic Compounds and Transfer of Nascent As<sub>2</sub> Facilitated by a Frustrated Lewis Pair.

Angewandte Chemie (International ed. in English)·2025
Same author

Design and Preparation of Compact 3-Bit Reconfigurable RF MEMS Attenuators for Millimeter-Wave Bands.

Micromachines·2025

相关实验视频

Updated: Jan 11, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI

Published on: November 22, 2016

8.2K

基于Ga/P的两性酸盐及其与主要组元素的反应性.

Qiannan Wu1, Ludwig Zapf1, Michael J Ferguson1

  • 1Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta T6G 2G2, Canada.

Inorganic chemistry
|November 11, 2025
PubMed
概括

新的-挫败的易斯对 (FLPs) 被合成和测试. 这些Ga / PFLP在与aminoborane反应时表现出不稳定性,与基于的FLP不同,原因是硬软酸不匹配.

科学领域:

  • 有机金属化学 有机金属化学
  • 主群 化学 化学
  • 丧的易斯配对化学

背景情况:

  • 挫败的易斯对 (FLP) 是由易斯酸和的组合形成的反应性物种,它们不能形成经典的附加物.
  • 含有 (Ga) 和 (P) 的FLP值得关注,因为Ga中心的可调的易斯酸度.
  • 之前的研究集中在类似应用的基FLP上.

研究的目的:

  • 综合和表征新的双感Ga/P含有丧的易斯对 (FLP).
  • 为了研究这些新的Ga/PFLP与软主要组元素和aminoborane的反应性.
  • 将Ga/P FLPs的稳定性和反应性与已确定的基FLPs进行比较.

主要方法:

  • 合成了两个Ga/PFLP:[iPr2P(C6H4) GaMes2] (PGaMes2,1) 和[{iPr2P(C6H4) }2GaMes] (P2GaMes,2). 这两种Ga/PFLP的合成方法包括:
  • Ga/P FLPs与 (Te) 的反应.
  • 探索阿米诺 (H2B-NH2) 与Ga/P FLPs的协调作用.

主要成果:

  • 已经成功合成了Ga/P FLPs.
  • 在Ga/P FLPs与反应.

更多相关视频

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

11.1K
Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

3.3K

相关实验视频

Last Updated: Jan 11, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI

Published on: November 22, 2016

8.2K
Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

11.1K
Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

3.3K
  • 发现与阿米诺波兰的Ga/P adduct,[P2GaMes{H2BNH2}] (8),是不稳定的.
  • 随着时间的推移,不稳定的引物8分解,释放出博拉 ([HBNH]3).

    • 结论:

    • 合成的Ga/P FLPs具有独特的反应性概况.
    • Ga/P-aminoborane添加物的不稳定性归因于和之间的硬软酸不匹配.
    • 与其基对应物相比,Ga/P FLP 的稳定性和反应性不同.