Twisted Cucurbit[14]uril

Authors

  • Xiao-Jie Cheng,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Li-Li Liang,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Kai Chen,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Ning-Ning Ji,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Prof. Xin Xiao,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Prof. Jian-Xin Zhang,

    1. Key Laboratory of Chemistry for Natural Products of Guizhou Province, Guiyang 550002 (P. R. China)
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  • Prof. Yun-Qian Zhang,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Prof. Sai-Feng Xue,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Prof. Dr. Qian-Jiang Zhu,

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
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  • Dr. Xin-Long Ni,

    Corresponding author
    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
    • Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)

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  • Prof. Dr. Zhu Tao

    Corresponding author
    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)
    • Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025 (P. R. China)

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  • This research was supported by the National Natural Science Foundation of China (No. 21272045); the Natural Science Foundation of the Department of Education of Guizhou Province and the “Chun-Hui” Funds of the Chinese Ministry of Education are also gratefully acknowledged.

Abstract

original image

All in a twist: The largest cucurbit[n]uril, namely tQ[14] (see picture; colors indicate sides of the molecule) contains 14 normal glycoluril units linked by 28 methylene bridges. However, it contains a 360° twist. As a consequence, it does not have a normal cavity like the most cucurbit[n]urils, and instead has a folded, figure-of-eight conformation.

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