A Selenenium-Bridged 10-Boratriptycene Lewis Acid

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Abstract

A non-planar triarylborane and a new member of the boratriptycene family bearing a selenium atom in bridgehead position of triptycene scaffold was generated and isolated as a boron- ate complex paired with a weakly coordinating anion. With similar electronegativity while possessing longer atom radius with respect to sulfur, the introduction a selenium atom, in the form of a selenenium moiety, at the bridgehead of a triptycene scaffold allows a very precise modification of the pyramidalization of the boron atom environment. Experimental and computational evaluation of the Lewis acidity of this new boratriptycene derivative gave qualitative information on how a modification of the pyramidalization of the boron environment affects alone Lewis acidity parameters of such pyramidal triarylborane.

Original languageEnglish
JournalSynthesis (Germany)
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • acidity scale
  • Lewis acids
  • main-group chemistry
  • organoboron compounds
  • triptycene

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