title: Two-coordinate Fe⁰ and Co⁰ complexes supported by cyclic (alkyl)(amino)carbenes.
abstract: The CAAC [CAAC=cyclic (alkyl)(amino)carbene] family of carbene ligands have shown promise in stabilizing unusually low-coordination number transition-metal complexes in low formal oxidation states. Here we extend this narrative by demonstrating their utility in affording access to the first examples of two-coordinate formal Fe(0) and Co(0) [(CAAC)2M] complexes, prepared by reduction of their corresponding two-coordinate cationic Fe(I) and Co(I) precursors. The stability of these species arises from the strong σ-donating and π-accepting properties of the supporting CAAC ligands, in addition to steric protection.
authors: Division of Chemistry and Chemical Engineering, California Institute of Technology (USA).
authors: Gaël
authors: G
authors: Ung
authors: Jonathan
authors: J
authors: Rittle
authors: Michele
authors: M
authors: Soleilhavoup
authors: Guy
authors: G
authors: Bertrand
authors: Jonas C
authors: JC
authors: Peters
keywords: CAAC ligands; carbene complexes; cobalt; iron; low-coordinate complexes