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Synfacts 2026; 22(01): 23
DOI: 10.1055/a-2738-9477
Synthesis of Materials and Unnatural Products

A Diborencine Macrocycle Capable of Electron Encapsulation

Authors

    Contributor(s):

  • Dahui Zhao

  • Xinhang Chang

Wu Y, Pan Y, Yao J, Xu G, Lau K *, Lu Z *. City University of Hong Kong, P. R. China
Encapsulation of an Electron in a Diborencine Macrocycle: Synthesis, Structure, and Reactivity.

J. Am. Chem. Soc. 2025;
147: 35895-35902
DOI: 10.1021/jacs.5c12718
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Keywords

diborencine macrocycles - one-electron σ-bond - electron encapsulation - sp3 hybridized boron

Significance

Due to the delocalization tendency of electrons, encapsulation of a single electron within a small molecular cavity is challenging. This work successfully achieves a single-electron B–B σ-bond integrated into a macrocyclic scaffold, and its unique reactivity is characterized.


Comment

Upon reduction of a ten-membered diborencine macrocycle with one equivalent potassium, an anionic radical featuring a one-electron σ-bond between two boron atoms is produced. It is characterized by way of single-crystal X-ray diffraction and electron paramagnetic resonance spectroscopy.




Publication History

Article published online:
16 December 2025

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