![The Synthesis of [Sn10(Si(SiMe3)3)4]2- Using a Metastable Sn(I) Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
クロミウム (III) トライアセチリド複合体の合成とアルカリ金属イオン結合特性
Louise A Berben1, Jeffrey R Long
1Department of Chemistry, University of California, Berkeley, California 94720-1460.
Journal of the American Chemical Society
|September 26, 2002
まとめ
新しいクロム ((III) トライアセチリド複合体は,金属二酸化炭素群の前駆体として合成されました. この空気安定化合物は,材料科学に意味を持つユニークな構造を特徴としています.
科学分野:
- 無機化学 無機化学とは
- 有機金属化学 有機金属化学
- マテリアルサイエンス 材料科学
背景:
- クロミウム複合体は,触媒と材料科学において極めて重要です.
- 金属二酸化炭素クラスターのような先進的な材料のための前駆物質の開発は,活発な研究分野です.
- アセチリドリガンドは,協調化学におけるユニークな結合と反応性を提供します.
研究 の 目的:
- 新型クロム (III) トライアセチリド複合体を合成する.
- その構造的,結合的,磁気的性質を調査する.
- 金属二炭化物クラスターの先駆体としての可能性を探求する.
主な方法:
- トリメチルシリラセチリドとの反応によるクロム (III) トライアセチリド複合体の合成.
- X線結晶学を用いた特徴化.
- 磁気特性の調査.磁気特性の調査.
主要な成果:
- 前例のない空気安定のオレンジ色クロム (((III) トライアセチリド複合体, [ (((Me (((3) tacn) Cr (((CCH)) (((3) ]が成功して合成されました.
- X線結晶学では,アセチレンに似た線形Cr-CC結合を持つクロムの中心周辺の八面座標を明らかにした.
- K(+) とCs(+) カチオンを含む複合体は,Cr(III) センター間のサイドオン協調と弱い反鉄磁気交換を示した.
結論:
- 合成されたクロム ((III) トライアセチリド複合体は,潜在的な金属二炭化物クラスターの安定した前駆体である.
- 構造的および磁性特性は,クロム複合体におけるアセチリドリガンドの結合に関する洞察を提供します.
- この研究は,電子および磁気特性を合わせた新しい材料を設計するための道を開きます.
関連する概念動画
02:37Metallic 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...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
02:51Metal-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...
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...
02:34Structural 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...
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...
02:42Valence Bond Theory
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...
01:23Properties 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.
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
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...