Labilized Ligands Under Ultra-Confinement: A Solid-State 2H NMR Investigation of Ln(BH4)2(THF)2/HY30

Abstract

Variable-temperature ²H NMR reveals that the THF ligands are highly labile in Ln(BH₄)₂(THF)₂/HY₃₀, undergoing exchange between Ln sites under confinement via low-coordinate intermediates. Potency in catalytic C-H borylation likely emerges from access to highly electrophilic, electronically unsaturated species.