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Ruthenium(II) Complexes Containing Lutidine-derived Pincer CNC Ligands: Synthesis, Structure and Catalytic Hydrogenation of C=N bonds

Opened Access Ruthenium(II) Complexes Containing Lutidine-derived Pincer CNC Ligands: Synthesis, Structure and Catalytic Hydrogenation of C=N bonds

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Autor: Hernández Juárez, M.
López Serrano, Joaquín
Lara, Patricia
Morales Cerón, Judith
Vaquero, Mónica
Álvarez González, Eleuterio
Salazar, Verónica
Suárez, Andrés
Fecha: 2015
Publicado en: Chemistry - a European Journal, 21 (20), 7540-7555.
Tipo de documento: Artículo
Resumen: A series of Ru complexes containing lutidine‐derived pincer CNC ligands have been prepared by transmetalation with the corresponding silver‐carbene derivatives. Characterization of these derivatives shows both mer and fac coordination of the CNC ligands depending on the wingtips of the N‐heterocyclic carbene fragments. In the presence of tBuOK, the Ru‐CNC complexes are active in the hydrogenation of a series of imines. In addition, these complexes catalyze the reversible hydrogenation of phenantridine. Detailed NMR spectroscopic studies have shown the capability of the CNC ligand to be deprotonated and get involved in ligand‐assisted activation of dihydrogen. More interestingly, upon deprotonation, the Ru‐CNC complex 5 e(BF4) is able to add aldimines to the metal–ligand framework to yield an amido complex. Finally, investigation of the mechanism of the hydrogenation of imines has been carried out by means of DFT calculations. The calculated mechanism involves outer‐sphere stepwise hyd...
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Cita: Hernández Juárez, M., López Serrano, J., Lara, P., Morales Cerón, J., Vaquero, M., Álvarez González, E.,...,Suárez, A. (2015). Ruthenium(II) Complexes Containing Lutidine-derived Pincer CNC Ligands: Synthesis, Structure and Catalytic Hydrogenation of C=N bonds. Chemistry - a European Journal, 21 (20), 7540-7555.
Tamaño: 1001.Kb
Formato: PDF

URI: https://hdl.handle.net/11441/78000

DOI: 10.1002/chem.201406040

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