Self-Assembly of [3]Catenane and [4]Catenane Based on Neutral Organometallic Scaffolds

Frontiers in Chemistry

卷:9

Ming-Rui Zhang¹  Guangxin Yao¹  Xiao-Wei Sheng¹  Hong-Juan Zhu¹  Gui-Yuan Wu¹  Zhou Lu¹  Xianyi Zhang¹  Fang-Fang Pan²  Hang Qu³ 

[1] Anhui Province Key Laboratory of Optoelectronic Material Science and Technology, School of Physics and Electronic Information, Anhui Normal University, Wuhu, China;

[2] China Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, China;

[3] State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China;

关键词: mechanically interlocked molecules;    catenane;    coordination-driven self-assembly;    platinum–oxygen bond;    metallacycle;   

DOI  :  10.3389/fchem.2021.805229

来源: DOAJ

【 摘 要 】

Transition metal-mediated templating and self-assembly have shown great potential to construct mechanically interlocked molecules. Herein, we describe the formation of the bimetallic [3]catenane and [4]catenane based on neutral organometallic scaffolds via the orthogonality of platinum-to-oxygen coordination-driven self-assembly and copper(I) template–directed strategy of a [2]pseudorotaxane. The structures of these bimetallic [3]catenane and [4]catenane were characterized by multinuclear NMR {1H and 31P} spectroscopy, electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS), and PM6 semiempirical molecular orbital theoretical calculations. In addition, single-crystal X-ray analyses of the [3]catenane revealed two asymmetric [2]pseudorotaxane units inside the metallacycle. It was discovered that tubular structures were formed through the stacking of individual [3]catenane molecules driven by the strong π–π interactions.

【 授权许可】

Unknown