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Backbone‐Directed Self‐Assembly of Interlocked Molecular Cyclic Metalla[3]Catenanes
Author(s) -
Feng Ting,
Li Xin,
An YuanYuan,
Bai Sha,
Sun LiYing,
Li Yang,
Wang YaoYu,
Han YingFeng
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202004112
Subject(s) - catenane , supramolecular chemistry , chemistry , crystallography , spectroscopy , stereochemistry , materials science , topology (electrical circuits) , molecule , crystal structure , organic chemistry , physics , mathematics , quantum mechanics , combinatorics
Abstract The efficient backbone‐directed self‐assembly of cyclic metalla[3]catenanes by the combination of tetrachloroperylenediimide (TCPDI)‐based dinuclear rhodium(III) clips and 4,4′‐diazopyridine or 4,4′‐dipyridylethylene ligands is realized in a single‐step strategy. The topology and coordination geometry of the cyclic metalla[3]catenanes are characterized by NMR spectroscopy, ESI‐TOF‐MS spectrometry, UV/Vis‐NIR spectroscopy, and X‐ray diffraction studies. The most remarkable feature of the formed cyclic metalla[3]catenane is that it contains π‐aggregates (ca. 2.6 nm) incorporating six TCPDIs. Further studies revealed that cyclic metalla[3]catenanes can be converted reversibly to their corresponding sodium adducts and precursor building blocks, respectively. This strategy opens the possibility of generating unique supramolecular structures from discrete functional π‐aggregates with precise arrangements.