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A Tubular Belt and a Möbius Strip with Dynamic Joints: Synthesis, Structure, and Host-Guest Chemistry
Jun Yuan1, Yunyi Song1, Xia Li1
1School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China.
Abstract:
Two unprecedented isomeric macrocycles, a tubular belt and a Möbius strip, with thianthrene joints have been constructed through a one-step cyclization reaction. Both structures are fully characterized by NMR spectroscopy, mass spectrometry, and single-crystal X-ray diffraction. A complexation study reveals that the tubular belt is a container for electron deficient guests. The Möbius strip exhibits twist-migration dynamics, which can be regulated by a sodium ion. Their facile synthesis, unique structure, and diverse host-guest chemistry enrich the belt chemistry.
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