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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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.
Metallic Solids02:37

Metallic Solids

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. Many...
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...
Coordination Number and Geometry02:57

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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...

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関連する実験動画

Updated: Jun 23, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

分子多面体と金属有機構造の相互変換

Jian-Rong Li1, Daren J Timmons, Hong-Cai Zhou

  • 1Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, USA.

Journal of the American Chemical Society
|April 21, 2009
PubMed
まとめ
この要約は機械生成です。

研究者は,溶性分子八面体からpcu-aトポロジーを持つ金属有機フレームワーク (MOF) を構築した. このMOFは,リガンド置換反応によって,逆転的にオクターエドールに戻すことができる.

さらに関連する動画

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

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
05:26

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

関連する実験動画

Last Updated: Jun 23, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

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

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
05:26

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

科学分野:

  • マテリアルサイエンス 材料科学
  • 超分子化学 超分子化学
  • ナノテクノロジー ナノテクノロジー

背景:

  • メタル・オーガニック・フレームワーク (MOF) は,調節可能な性質を持つ結晶材料です.
  • 分子八面体は,高度な材料のためのユニークな構造的モチーフを提供します.
  • MOFの可逆変換は,ダイナミックなアプリケーションでは極めて重要です.

研究 の 目的:

  • pcu-aトポロジーで金属有機フレームワーク (MOF) を実験的に構築する.
  • 前編成の溶性分子八面体を構成ブロックとして利用する.
  • MOFと分子八面体との間の可逆変換を調査する.

主な方法:

  • 新しい金属有機構造体の実験合成.
  • 前編成の溶性分子八面体を使用しています.
  • MOFの構造と特性の特徴.
  • 軸-リガンド置換反応による可逆変換の調査.

主要な成果:

  • 分子八面体からpcu-aトポロジーでMOFを成功裏に構築.
  • MOFと分子八面体との間の可逆変換の実証.
  • 主要な反応機構として,軸-リガンド置換の識別.

結論:

  • この研究は,溶性分子前駆物質を用いたMOF構築のための新しい方法を示しています.
  • MOF-オクタエドロン変換の可逆性により,ダイナミックな材料の可能性が生まれます.
  • Axial-ligand substitutionは,MOFの組み立てと分解のための制御可能な経路を提供します.