从VI组和VIII组金属中复合和释放N-异环碳素-氨基乙烯联体
Conor Pranckevicius1,2, J Oscar C Jimenéz-Halla3, Marius Kirsch1,2
1Institute for Inorganic Chemistry , Julius-Maximilians-Universität Würzburg, Am Hubland , 97074 Würzburg , Germany.
Journal of the American Chemical Society
|July 27, 2018
概括
通过N-异环碳酸盐 (NHC) 稳定新的aminoborylene配体,形成强大的金属复合物. 这些配体具有高度的电子释放性和核友性,在协调化学中提供独特的稳定性和反应性.
科学领域:
- 有机金属化学
- 主要组化学
- 连接物设计
背景情况:
- N-异环碳 (NHC) 是协调化学中的多功能联体.
- 氨基玻利烯是一种具有独特电子性质的含配体.
- 了解金属复合物的稳定性和反应性对于开发新的催化系统至关重要.
研究的目的:
- 研究不同N- heterocyclic carbene (NHC) 稳定组的aminoborylene配体的协调化学和稳定性.
- 合成和描述新的金属-氨基乙烯复合物.
- 将NHC稳定型氨基玻利与其他配体的电子特性和反应性进行比较.
主要方法:
- 通过减少NHC-dihaloaminoborane添加物合成NHC-aminoborylene复合物.
- 使用六碳M(0) 种 (M=Fe,Ru,Cr,W) 作为减少剂.
- 使用红外光谱和X射线晶体学进行表征 (隐含).
主要成果:
- 伊米达-2-伊利丁稳定型阿米诺联体形成了热强和惰性金属复合物.
- 这些配体被发现比经典的NHC具有更多的电子释放和核友性.
- 循环氨基 (CAAC) 结合的二氨基产生中心基或碳稳定氨基.
- 在鲁复合体中观察到玻利到CO的迁移.
结论:
- 稳定NHC的氨基玻利是有效的连接物,可以产生稳定和独特的金属复合物.
- NHC稳定组的电子特性显著影响产生的金属玻利复合物的反应性和稳定性.
- 氨基玻利是一种新型的配体,在催化和材料科学中具有潜在的应用.
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