Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

734
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
734
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

23.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
23.6K
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

1.0K
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...
1.0K
Formation of Complex Ions03:45

Formation of Complex Ions

25.5K
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...
25.5K
EDTA: Chemistry and Properties01:22

EDTA: Chemistry and Properties

3.1K
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...
3.1K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.1K
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...
1.1K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Mild Hydrothermal Synthesis of Zirconium-Containing Fluorides: K<sub>2</sub>[<i>M</i>(H<sub>2</sub>O)<sub>6</sub>][Zr<sub>2</sub>F<sub>12</sub>] (<i>M</i> = Fe, Co), Rb<sub>2</sub>[<i>M</i>(H<sub>2</sub>O)<sub>6</sub>][Zr<sub>2</sub>F<sub>12</sub>] (<i>M</i> = Fe, Co, Ni, Cu, Zn), Cs<sub>2</sub>[<i>M</i>(H<sub>2</sub>O)<sub>6</sub>][Zr<sub>2</sub>F<sub>12</sub>] (<i>M</i> = Fe, Co, Ni), and Cs<sub>2</sub>Zr<sub>3</sub>Mn<sub>3</sub>F<sub>20</sub>.

Inorganic chemistry·2026
Same author

Elucidating the Structure and Identity of Pinckneyin, a Historical Natural Product from <i>Pinckneya bracteata</i>.

ACS omega·2026
Same author

Topical Amitriptyline, Ketamine, and Lidocaine Cream for Neuropathic Pain Control in Pediatric Oncology Patients.

Journal of pain and symptom management·2026
Same author

Mo<sub>0.92</sub>TiTa<sub>8.08</sub>O<sub>25</sub>: Structural, Electrochemical, and Computational Investigation as the Anode for Lithium-Ion Batteries.

Inorganic chemistry·2026
Same author

Thermochromism and X-ray detection capabilities of a hybrid double metal halide perovskite (C<sub>3</sub>H<sub>12</sub>N<sub>2</sub>)<sub>2</sub>AgBiBr<sub>8</sub>.

CrystEngComm·2026
Same author

Biobased Cyclic Enoate Monomers: Enabling Intrinsically Crystalline, Chemically Recyclable, Ultratough Polymers.

Angewandte Chemie (International ed. in English)·2026

関連する実験動画

Updated: Jan 1, 2026

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
05:47

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

8.0K

レドックスおよびアルカリ性安定金属ポリエレクトロライトへの金属カチオンの合理的合成

Tianyu Zhu, Ye Sha, Horie Adabi Firouzjaie

    Journal of the American Chemical Society
    |December 18, 2019
    PubMed
    まとめ

    研究者らはコバルトセンの新型メタロカチオンを 機能的なポリエレクトロライトのために設計した. これらの安定したカチオンは高性能のアニオン交換膜をアルカリ燃料電池に可能にし,厳しい条件下でも有望である.

    さらに関連する動画

    Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
    06:53

    Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

    Published on: June 9, 2023

    2.5K
    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

    11.0K

    関連する実験動画

    Last Updated: Jan 1, 2026

    Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
    05:47

    Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

    Published on: August 7, 2018

    8.0K
    Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
    06:53

    Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

    Published on: June 9, 2023

    2.5K
    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

    11.0K

    科学分野:

    • 材料科学
    • 電気化学
    • ポリマー化学

    背景:

    • 機能的なポリエレクトロライトは様々な用途に不可欠であり,改良された特性を持つ新しいカチオンの需要を駆動します.
    • ポリエレクトロライト技術の進歩には,新しいカチオンの開発が不可欠です.

    研究 の 目的:

    • 独創的な電子とリドックス特性を有する新しいコバルトセンのメタロケーションを計算と実験的に設計する.
    • コバルトセンの一連の導出物を合成し,特徴づけること.
    • 固体アルカリ燃料電池のアニオン交換膜のための金属ポリエレクトロライトにこれらのカチオンを統合する.

    主な方法:

    • コバルトセンの構造の計算設計とスクリーニング
    • カチオン誘導体の実験的合成と特徴付け
    • 合成メタロケーションを含むアニオン交換膜の製造と試験.
    • 性および酸化条件下での燃料電池装置の性能評価

    主要な成果:

    • コバルトセンの新型メタロケーションの設計と合成に成功した.
    • 安定性の高いカチオン誘導体の特定
    • これらの安定したカチオンを使用したメタロポリエレクトロライトの構築.
    • 厳格な環境でも,固体アルカリ燃料電池での競争力のあるデバイスの性能の実証.

    結論:

    • コバルトセンの金属酸塩は,高度な機能的なポリエレクトロライトに適した独特の電子およびリドックス特性を提供します.
    • 開発された金属ポリエレクトロライトは,固体アルカリ燃料電池のアニオン交換膜として堅実な性能を示しています.
    • これらの発見は,電気化学の要求の高いアプリケーションのための伝統的なオーガノポリエレクトロライトの有望な代替品を示しています.