Carbene-supported triphosphorus anion

Yanbo Mei (), Xue-Yi He, Jiancheng Li, Mo Liu, Qiuming Liang, Chengbo Yang and Liu Leo Liu ()
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Yanbo Mei: Southern University of Science and Technology
Xue-Yi He: Southern University of Science and Technology
Jiancheng Li: Southern University of Science and Technology
Mo Liu: Southern University of Science and Technology
Qiuming Liang: Great Bay University
Chengbo Yang: Chinese Academy of Sciences
Liu Leo Liu: Southern University of Science and Technology

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract The stabilization of reactive anionic main group species utilizing carbenes constitutes a burgeoning and scarcely explored field. Herein, we report the synthesis of an anionic triphosphorus [P3]ˉ unit, supported by two cyclic (alkyl)(amino)carbenes (CAACs) in the form of potassium salts. This anion features a planar W-shaped conjugated C-P-P-P-C framework, characterized by 5-center-6-electron π delocalization and an additional σ lone pair located on each of the three phosphorus atoms. Remarkably, this anion is not only strongly basic and nucleophilic but also reductive, positioning versatile functionalization of the [P3] unit. This approach has advanced the isolation of unique carbene-supported cores, including [HP3], [P3N3R]−, [P3O]− and [P6], thus expanding the frontiers of phosphorus chemistry. Moreover, the addition of the two phosphorus fragments upon P-P bond cleavage of the [P3] unit to the triple bond of diphenylacetylene for the synthesis of an extended conjugated system was described.

Date: 2025
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DOI: 10.1038/s41467-025-57660-6

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