title: Activation of dinitrogen-derived hafnium nitrides for nucleophilic N-C bond formation with a terminal isocyanate.
abstract: Better by Hf: Anion coordination to a bridging hafnocene nitride complex, prepared from CO-induced N2 cleavage, increases the nucleophilicity of the nitrogen atom, thus promoting additional NC bond formation with a typically inert terminal isocyanate ligand. This cascade sequence allows synthesis of otherwise challenging mono-substituted ureas using N2 , CO, and an appropriate electrophile.
authors.affiliation: Department of Chemistry, Princeton University, Princeton, New Jersey, 08544 (USA).
authors.forename: Scott P
authors.initials: SP
authors.lastname: Semproni
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Chirik
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D006195:Hafnium / Q000737:chemistry*; D017953:Isocyanates / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D009584:Nitrogen / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D017953:Isocyanates; D008024:Ligands; D009584:Nitrogen; D006195:Hafnium
keywords: hafnium; isocyanates; nitrido ligands; nitrogen fixation