Osmium polyhydrides containing boron ligands

Resumen del trabajo presentado a la X International School on Organometallic Chemistry “Marcial Moreno Mañas”, celebrada en Ciudad Real (España) del 5 al 7 de julio de 2017.The reactions of B-H bond activation by transition metal complexes is a field of great interest due to its connection with numerous catalytic processes such as hydroboration of unsaturated organic molecules, dehydrogenative borylation of hydrocarbons, and dehydrocoupling of amine-borane derivatives. Among transition metal complexes, polyhydrides of platinum group metals have shown to promote the activation of B-H bonds. Our group has recently shown that hydride osmium complexes not only exhibit a rich reactivity with boranes giving rise to a variety of species such as boryl-dihydrideborate, σ-borinium, σ-borane, and bis-σ-borane, but also catalyses the ammonia-borane and amine-borane adducts dehydrogenation. Herein, we present new polyhydrides of osmium containing boron ligands, which have been characterized in solid state and solution and their bonding situation analysed via DFT calculations.Peer reviewe