Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 65, Pages 14785-14789Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201904082
Keywords
catenanes; crown compounds; donor-acceptor interactions; self-assembly; supramolecular chemistry
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Funding
- National Science Foundation of China [21531002, 21720102004]
- Shanghai Science Technology Committee [13JC1400600]
- Alexander von Humboldt Foundation
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A stepwise self-assembly protocol has been used to synthesize [2]- and [3]catenanes. Firstly, binuclear Cp*Rh/Ir-directed (Cp*=pentamethylcyclopentadienyl) pseudorotaxanes were prepared through self-assembly, driven by donor-acceptor interactions between electron-deficient naphthalenediimide (NDI) units and an electron-rich crown ether. Subsequently, the pre-organized pseudorotaxanes were applied as tectons for self-assembly of [2]- and [3]catenanes by combination with very simple linkers. The structures of the catenanes were confirmed by NMR spectroscopy, ESI mass spectrometry, single-crystal X-ray diffraction analysis, and elemental analysis.
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