Abstract:Combined experimental and theoretical studies allowed clarifying the reaction
mechanism for the revival of frustrated carbene−borane pairs from external-stimuli-responsive
classical Lewis adducts comprised of N-phosphine oxide-substituted imidazolylidenes and
triarylboranes. A borane-transfer process from the carbene carbon atom to the N-phosphinoyl
oxygen atom was identified as the rate-determining event for the regeneration of the FLP
species, eventually enabling the heterolytic cleavage of H2.<br> Show more
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