一个对称的5折互锁 [2]连锁
Tanya K Ronson1, Yujia Wang2, Kim Baldridge2
1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
Journal of the American Chemical Society
|May 27, 2020
概括
研究人员使用烯衍生物创造了新的相互锁定的分子和. 这些复杂的结构,包括金属离子和化物或化物联体,表现出与客人的独特碗中的安排.
科学领域:
- 超分子化学
- 协调化学
- 材料科学
背景情况:
- 冠氨酸衍生物作为超分子化学中的多功能构件.
- 综合复杂的相互关联的架构,
- 金属有机和连锁在宿主-客化学和催化中提供了潜在的应用.
研究的目的:
- 合成和表征由五基 ((4-aminothiophenyl) corannulene前体衍生出的新型超分子结构.
- 研究相互锁定的 [2]链条和金属有机的形成.
- 探索这些组件中的宿主-客户属性和能量贡献.
主要方法:
- 模板辅助合成涉及与特定的化物和化物连接物和金属离子 (CuI,CoII,ZnII) 的sym-pentakis(4-aminothiophenyl) corannulene.
- 使用X射线晶体学,核磁共振 (NMR) 光谱学和质谱学进行结构性表征.
- 使用密度函数理论 (DFT) 来评估能量贡献的计算分析.
主要成果:
- 成功合成S10对称的5倍互锁 [2]链 ([CuI5L2]5+) 和D5对称的金属有机 ([MII5L2]10+).
- 通过X射线结晶学证实了复杂的相互透的子和连锁结构.
- DFT计算显示,非共价分散力发挥着至关重要的作用,与共价键能量相美.
结论:
- 这项研究证明了构建具有高度对称性的复杂多元件超分子结构的可行性.
- 在特定条件下,子组件交换反应表明对子形成的偏好.
- 由此产生的体和体可以封装冠状素客体,形成独特的碗中的底层结构.
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