M8 Pd6 超分子的动态立体化学基于金属中心可变性,用于差异化拉诱导,分辨率和识别
Yin-Hui Huang1, Yu-Lin Lu1, Xiao-Dong Zhang1
1MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China.
Angewandte Chemie (International ed. in English)
|October 26, 2023
概括
研究人员组装了具有不同金属可变性的金属有机 (MOC),控制它们的性. 不同的金属中心影响了子的稳定性和性识别,使可调节的超分子立体化学能够用于应用.
科学领域:
- 超分子化学 超分子化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 合成了具有形十二面体形状的同结构超分子子.
- 具有不同协调可变性的金属中心 (Ru2+,Fe2+,Ni2+,Zn2+) 被纳入M8Pd6-MOC-16结构.
- 从金属中心的奇拉性转移通常导致 homochiral 子.
研究的目的:
- 为了研究金属中心可变性对子立体化学和稳定性的影响.
- 探索依赖溶剂的自发分辨率和手性识别特性.
- 通过动态金属中心来证明对超分子性的控制.
主要方法:
- 用不同的金属离子 (Ru2+,Fe2+,Ni2+,Zn2+) 组装同结构的M8和Pd6金属有机 (MOC).
- 对立体化学动力学和子稳定性的分析.
- 研究溶剂介导的主体-客体相互作用和离子诱导的过渡.
主要成果:
- 子中的稳定性遵循的顺序是:Ru8Pd6 > Ni8 Pd6 > Fe8 Pd6 > Zn8 Pd6.
- 可变的Zn8Pd6体表现出形状灵活性和离子诱导的性过渡 (Δ8/Λ8到中位Δ4Λ4).
- 溶剂效应使得在Δ8/Λ8-(Ru/Ni/Fe) 8Pd6子中能够识别具有相反性的客人.
结论:
- 金属中心的可变性为控制金属有机的立体化学提供了一种多功能策略.
- 溶剂,离子和客体相互作用可以被利用来操纵子奇拉性.
- 这项工作为设计具有可调整的奇拉性质的功能性超分子系统提供了指导.
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