Neutral η1-Carbon Ligands: Beyond Carbon Monoxide

Yves Canac (1) , Christine Lepetit (1) , Remi Chauvin (1)

1 LCC - Laboratoire de chimie de coordination

The Green formalism proposes a natural typology of the metal–carbon ligands. Among the neutral η1 representatives satisfying the octet rule for the carbon atom in the free state, three types are distinguished depending on the hybridization state (or connectivity) of the coordinating carbon atom. Each type corresponds to a well identified class of ligands exhibiting remarkable stability as compared to “anionic” versions: the ylide-type ligands and associated carbodiphosphoranes (sp 3), the N-heterocyclic carbenes (NHCs) and other stabilized carbenes (sp 2), and the cumulenylidenes with an even number of consecutive digonal carbon atoms stabilized by either heteroatomic or simple π-conjugated substituents (sp).

Mots clés: Allenylidenes; Carbenes; Carbodiphosphoranes; Carbon ligands; Cumulenylidenes; NHCs; Ylides

Domaines: Chimie de coordination

Yves Canac, Christine Lepetit, Remi Chauvin. Neutral η1-Carbon Ligands: Beyond Carbon Monoxide. Remi Chauvin; Yves Canac. Topics in Organometallic Chemistry, 30, Springer, pp.1-12, 2010, Transition Metal Complexes of Neutral eta1-Carbon Ligands, 978-3-642-04721-3. ⟨10.1007/978-3-642-04722-0_1⟩. ⟨hal-03733640⟩