A cyclic bis[2]catenane metallacage

Yiliang Wang, Yicheng Zhang, Zhixuan Zhou, Ryan T. Vanderlinden, Bin Li, Bo Song, Xiaopeng Li, Lei Cui, Jian Li, Xueshun Jia, Jianhui Fang, Chunju Li () and Peter J. Stang ()
Additional contact information
Yiliang Wang: Shanghai University
Yicheng Zhang: Shanghai University
Zhixuan Zhou: University of Utah
Ryan T. Vanderlinden: University of Utah
Bin Li: Shanghai University
Bo Song: University of South Florida
Xiaopeng Li: University of South Florida
Lei Cui: Shanghai University
Jian Li: Shanghai University
Xueshun Jia: Shanghai University
Jianhui Fang: Shanghai University
Chunju Li: Shanghai University
Peter J. Stang: University of Utah

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: Abstract Catenated cages represent chemistry’s challenging synthetic targets because a three-dimensional assembly is necessary for their formation. Herein, a cyclic bis[2]catenane is constructed through the coordination-driven self-assembly of the interlocked bis-metallacage, by the 90° Pt(II) heteroligation of the endo-functionalized double-bridged tweezer bearing pyridyl moieties and the tetra-carboxylated linker. NMR spectrometry, X-ray crystallography and mass spectrometry confirm the formation of a cyclic bis[2]catenane with “∞”-shaped topology via a 14-component self-assembly. Particularly, reversibly responsive transformation between the bis[2]catenane and the bis-metallacage can be realized by guest exchange, concentration effect and solvent effect. This work represents a novel example of a cyclic cage-based [2]catenane oligomer.

Date: 2020
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DOI: 10.1038/s41467-020-16556-3

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