A molecular sheaf: doubly threaded [6]rotaxane

Song Huang; Zhenwen Wang; Jinyang Wu; Xinyan Mai; Song Qin; Yuqiao Zhou; Daqiang Yuan; Xiaowei Li; Wen Feng; Lihua Yuan

doi:10.1039/D4CC00178H

A molecular sheaf: doubly threaded [6]rotaxane†

Song Huang,^a Zhenwen Wang,^a Jinyang Wu,^a Xinyan Mai,^a Song Qin,

^a Yuqiao Zhou,

^a Daqiang Yuan,

^b Xiaowei Li,

*^a Wen Feng

^a and Lihua Yuan

*^a

Author affiliations

* Corresponding authors

^a College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, China
E-mail: lhyuan@scu.edu.cn, lixw@scu.edu.cn

^b State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China

Abstract

We report that the use of a hydrogen-bonded pyrimidine-macrocycle complex can efficiently facilitate the threading of two bispyridinium ethylenes into four rings, as evidenced by X-ray crystallography of its precursor, offering a rare example of a doubly threaded [6]rotaxane in 91% yield. The unusual architecture is found to be stable with no dethreading despite the large ring size of the macrocycle with respect to the stopper.

Chemical Communications

A molecular sheaf: doubly threaded [6]rotaxane†

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A molecular sheaf: doubly threaded [6]rotaxane

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