具有MCC) 结构动图的Ca (II) 和Yb (II) 复合体:强迫的接近或真正的 η () -结合?
Dmitry M Lyubov1, Hamza Zakaria1,2, Yulia V Nelyubina3,4
1G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Russia, 49 Tropinina str., GSP-445, 603950, Nizhny Novgorod.
新的 bis ((carbazolide) 复合物与和 ytterbium 具有一个独特的 M ((η2-CC) 4) 结构图案. 这种不寻常的结合涉及金属离子与四个乙片段相互作用,由各种光谱和衍射方法证实.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 碳化物联体在协调化学中具有多样性.
- 性金属和稀土金属表现出不同的结合行为.
- 乙片段可以参与金属协调.
研究的目的:
- 合成新的和的 bis (((carbazolide) 复合物.
- 研究这些复合体中的结构动机和结合相互作用.
- 用实验和计算方法描述金属-乙结合的特征.
主要方法:
- 复杂合成的转胺反应.
- 用X射线衍射进行结构分析.
- 拉曼光谱和NMR光谱用于实验证据.
- 分子中的原子量子理论 (QTAIM) 分析用于结合见解.
主要成果:
- 成功合成了 bis ((carbazolide) 复合物M[3,6-tBu2-1,8-(RCC) 2Carb]2 ((THF) n.n.的复合物.
- 观察到一个独特的M(η2-CC) 4结构图案与M(II) 离子.
- 确认金属离子和三重CC键之间的非典型的n2相互作用.
- 在QTAIM分析中,发现了特定的债券关键点和路径.
结论:
- 合成的复合物表现出前所未有的金属-乙结合.
- 这种M ((η2-CC) 4图案是通过强大的η2-相互作用来稳定.
- 实验和计算数据为这种独特的协调模式提供了全面的证据.
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