Iridium-induced regioselective B–H and C–H activations at azo-substituted m-carboranes: facile access to polynuclear complexes

Iridium(III)-induced selective B(2,3)–H and C–H bond activations at mono- and bi-p-methoxybenzeneazo-substituted m-carboranes have been investigated. A powerful methodology is introduced for the preparation of unique polynuclear complexes featuring m-carboranyl ligands in a single step. The experimental results highlight that the base employed in the reaction plays a key role in the formation and the structures of the complexes.