Structure-constraint induced increase in Lewis acidity of tris(<i>ortho</i>-carboranyl)borane and selective complexation with Bestmann ylides.

ABSTRACT: The Lewis acidity of tris(ortho-carboranyl)borane has been slightly increased by mimicking the structural evolution from triarylborane to 9-aryl-9-borafluorene. The o-carborane-based analogue (C₂B₁₀H₁₀)₂B(C₂B₁₀H₁₁), obtained via salt elimination between LiC₂B₁₀H₁₁ and (C₂B₁₀H₁₀)₂BBr, has been fully characterized. Gutmann-Beckett and computational fluoride/hydride ion affinity (FIA/HIA) studies have confirmed the increase in Lewis acidity, which is attributable to structural constraint imposed by the CC-coupling between two carboranyl groups. Selective complexation of (C₂B₁₀H₁₀)_2</

SUBMITTER: Xiang L 

PROVIDER: S-EPMC11465496 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature