Backbone-Directed Self-Assembly of Interlocked Molecular Cyclic Metalla[3]Catenanes

被引:52
作者
Feng, Ting [1 ]
Li, Xin [1 ]
An, Yuan-Yuan [1 ]
Bai, Sha [1 ]
Sun, Li-Ying [1 ]
Li, Yang [1 ]
Wang, Yao-Yu [1 ]
Han, Ying-Feng [1 ]
机构
[1] Northwest Univ, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol, Minist Educ, Xian 710127, Peoples R China
关键词
cyclic metalla[3]catenanes; half-sandwich compounds; interlocked rings; rhodium; pi-interactions; BORROMEAN RINGS; SELECTIVE SYNTHESIS; CHEMICAL TOPOLOGY; CATENANES; RECOGNITION; ROTAXANES; MACHINES; DESIGN; KNOTS; PHOTOCHEMISTRY;
D O I
10.1002/anie.202004112
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 pi-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 pi-aggregates with precise arrangements.
引用
收藏
页码:13516 / 13520
页数:5
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