Year 2025

• Activation of small molecules by ambiphilic NHC-stabilized phosphinoborenium cation: formation of boreniums with B–O–C, B–O–B, and B–O–P structural motifs

  Publication

  • T. Wojnowski
  • A. Ordyszewska
  • H. Halenka
  • I. Anusiewicz
  • J. Chojnacki
  • K. Kaniewska-Laskowska
  • R. Grubba

  - DALTON TRANSACTIONS - Year 2025

  The reactivity of the phosphinoborenium cation supported by a 1,3,4,5-tetramethylimidazolin-2-ylidene ligand toward small molecules was explored. The phosphinoborenium cation exhibited dual Lewis acid–base properties due to the presence of the Lewis acidic boron center and the Lewis basic phosphido ligand connected by a covalent bond. The reaction of the title cation with CO2 led to the insertion of a CO2 molecule into the P–B...

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Year 2023

• Phosphinoborenium cations stabilized by N-heterocyclic carbenes: synthesis, structure, and reactivity

  Publication

  • K. Kaniewska-Laskowska
  • A. Ordyszewska
  • T. Wojnowski
  • H. Halenka
  • M. Czapla
  • J. Chojnacki
  • R. Grubba

  - DALTON TRANSACTIONS - Year 2023

  Phosphinoborenium cations stabilized by N-heterocyclic carbenes (NHCs) were synthesized via the reaction of bromo(phosphino)boranes with NHCs. Their structures were investigated by heteronuclear magnetic resonance spectroscopy, X-ray diffraction, and density functional theory calculations. They possess a planar trigonal boron center directly bonded with the pyramidal phosphanyl group (PR2) and can be treated as cationic phosphinoboranes....

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