调-多重键形成与辅助氧化连接体
Clément Camp1, Jacques Pécaut, Marinella Mazzanti
1Laboratoire de Reconnaissance Ionique et Chimie de Coordination, SCIB, UMR-E3 CEA-UJF, INAC, CEA-Grenoble, 17 rue des Martyrs, F-38054 Grenoble Cedex 09.
Journal of the American Chemical Society
|August 7, 2013
概括
本研究详细介绍了新型氧化复合物的合成和特征. 与亚酸的反应产生多种不同的化物,化物和亚化物复合物,突出了协调环境在U (III) 化学中的作用.
科学领域:
- 有机金属化学 有机金属化学
- 化学 的化学
- 协调化学 协调化学
背景情况:
- 的独特电子特性使其成为化学研究中一个迷人的元素.
- 了解低价值复合物的反应性对于开发新的合成方法至关重要.
研究的目的:
- 为了探索同质的反应性(III) 氧化物复合物与各种化物.
- 为了合成和表征新的化物,化物和化物复合物.
- 调查协调环境对反应结果的影响.
主要方法:
- 通过减少前体,合成 (III) 氧化复合物.
- 氧化与有机和无机亚酸的反应 (例如,阿达曼亚酸,三甲亚酸,亚酸).
- 使用X射线晶体学和其他分析技术对产品进行隔离和表征.
主要成果:
- 一个同质的 (III) 氧化复合物的分离[K () 18c6) ][U () OSi () O () t (Bu) 3) 4].
- 合成双核的U(VI) imido,U(V) imido,U(IV) azido和U(V) nitrido复合物.
- 结构特征揭示了U(VI) 复合体中的"离子-离子相互作用"和U(V) 化物复合体中的罕见U2N2核.
- 形成一个二 (IV) 复合体与桥接化连接体和离子.
结论:
- 协调环境在很大程度上决定了反应途径和产品,当氧化与化反应时.
- 可以访问不同的氧化状态和结构图案 (imido,nitrido,azido).
- 这项工作扩展了低价值复合物的已知化学和它们的转化.
相关概念视频
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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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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...
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00:43Complexometric Titration: Ligands
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02:42Valence Bond Theory
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01:06Nuclear Overhauser Enhancement (NOE)
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