Self-assembly of metalla[3]catenanes,Borromean rings and ring-in-ring complexes using a simple π-donor unit  

作　　者：Ye Lu Dong Liu Yue-Jian Lin Zhen-Hua Li Guo-Xin Jin 

机构地区：[1]State Key Laboiatory of Molecular Engineering of Polymers,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200438,China

出　　处：《National Science Review》2020年第10期1548-1556,共9页国家科学评论（英文版）

基　　金：supported by the National Natural Science Foundation of China(21531002,21720102004 and 21801045);the Shanghai Science and Technology Committee(19DZ2270100).

摘　　要：Despite extensive research and several stunning breakthroughs in the synthesis of interlocked molecular species,[3]catenanes;Borromean rings and ring-in-ring complexes are exceedingly rare and their targeted synthesis remains a formidable challenge.Herein,a series of Cp*Rh-based homogeneous and heterogeneous interlocked structures have been prepared by coordination-driven self-assembly,not only including metalla[2]catenanes and molecular Borromean rings,but also linear metalla[3]catenanes and ring-in-ring complexes.The interlocked structures are all based on bithiophenyl groups.The bithiophenyl groups effectively enhance the strength of the inter-ring interactions and play a crucial role in the formation of these interlocked structures.By taking advantage of the strong interaction between π-donor(D)and π-acceptor(A)groups,the electron-deficient methylviologen cation was introduced into a cationic metallarectangle based on bithiophenyl groups.Taking inspiration from these results,a cationic metallarcetangle based on A units was threaded into a metallarectangle based on D units,leading to a heterogeneous D-A ring-in-ring structure.

关 键 词：coordination-driven self-assembly supramolecular chemistry interlocked structure catenaries molecular Borromean rings ring-in-ring complex 

分 类 号：O641.4[理学—物理化学]