Donor–Acceptor [2]‐ and [3]Catenanes Assembled from Versatile Pre‐Organized CpRh/Ir‐Directed Pseudorotaxane Tectons

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) u...

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Bibliographic Details
Published in:Chemistry : a European journal 2019-11, Vol.25 (65), p.14785-14789
Main Authors: Liu, Dong, Lu, Ye, Lin, Yue‐Jian, Jin, Guo‐Xin
Format: Article
Language:English
Subjects:
Assembly
catenanes
Chemical analysis
Chemistry
crown compounds
Crown ethers
donor–acceptor interactions
Magnetic resonance spectroscopy
Mass spectrometry
Mass spectroscopy
NMR
NMR spectroscopy
Nuclear magnetic resonance
self-assembly
supramolecular chemistry
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Summary: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. Interlocked compounds: Donor–acceptor pseudorotaxanes were prepared through Cp*Rh‐ or Cp*Ir‐directed (Cp*=pentamethylcyclopentadienyl) self‐assembly. The pre‐organized binuclear catenaned complexes were used as versatile tectons for [2]‐ and [3]catenanes.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201904082