Ammonia is an important building block for the production of added value nitrogen-ing compounds. A significant challenge to address the catalytic functionalization of nia is related with the metal-mediated activation of the N-H bond of NH3, an issue red by the intrinsic forrnation of ammine adducts [M-NH3], which may poi son the ts preventing further operative catalysis. Our research group is currently dealing with -H bond activation of ammonia induced by iridium and rhodium organometallic exes. In this line, we are currently extending this work through the utilization of a -like ligand in combination with iridium. The known ligand (HN(CH2CH2PPh2), (1)) PNP donor array embedded in an flexible alkylic skeleton that allows both mer and fac nation lo the metal. In this contribution we show th ability of the pincer ligand 1 to stabilize nuclear amido and amino complexes of iridium, inducing square planar or bpt tries. A study of the reactivity of these M(d8) species with unsaturated substrates will described, some of which involves C-H activation through metal-ligand cooperation. onally, we will illustrate the ability of some of the iridium complexes to catalyze the of ammonia to unsaturated substrates (activated alkenes and alkynes) to give the bonding amines (or enamines). Additionally, the echanism moperative in these mination processes has been enlightened by theoretical DFT analysis.

Resumen del póster presentado a la XI International School On Organometallic Chemistry "Marcial Moreno Mañas" (2018), celebrada en Oviedo (España) del 6 al 8 de junio de 2018.

Peer reviewed