Abstract
Most of the bowl-shaped molecules are synthesized via a core-periphery strategy with the bowl rim closed at the final stage. However, the construction of heteroatom-doped buckybowls by the periphery-core method with the bowl bottom sealed by inserting new atoms in the last step is quite limited. Herein we report the synthesis of a bowl-shaped compound containing four sulfur atoms and two embedded N-B bonds with the ratio of carbon atom and heteroatom as low as four through a periphery-core strategy. Crystallographic analysis confirms the formation of a bowl-shaped structure. The multiple heteroatoms alter the molecular electronic structure, thus resulting in the distinct aromaticity when compared with its all-carbon congener. The electron-rich buckybowl shows a strong interaction with the electron-deficient fullerene C60 by forming a 1 : 1 complex in toluene.
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