Coordination Chemistry of New Chiral P,N Ferrocenyl Ligands with Half-Sandwich Ruthenium(II), Rhodium(III), and Iridium(III) Complexes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Organometallics Année : 2012

Coordination Chemistry of New Chiral P,N Ferrocenyl Ligands with Half-Sandwich Ruthenium(II), Rhodium(III), and Iridium(III) Complexes

Résumé

The new half-sandwich ruthenium(II), rhodium(III), and iridium(III) complexes (p-cymene)RuCl2L and Cp*MCl2L (M = Rh, Ir), where L is a planar chiral ferrocenyl tosylamine-phosphine ligand {1,2-(TosNRCH2)(PPh2)C5H3}FeCp (R = H, Me) coordinated in a monodentate fashion (κ1P), have been synthesized and fully characterized both in solution (multinuclear NMR, mass spectrometry) and in the solid state (X-ray analysis on single crystals). Intra- and intermolecular N–H···Cl bonds were observed. Variable-temperature NMR shows an equilibrium between different structures, which have been discussed with the help of DFT calculations. Addition of triethylamine to the complexes with R = H allows removing the tosylamide acidic hydrogen, giving rise to a ferrocenyl amidophosphine ligand coordinated in a bidentate fashion (κ2P,N). All complexes have been fully characterized by multinuclear NMR and mass spectrometry. The structure of the iridium complex, determined by X-ray diffraction, shows a planar nitrogen atom and a stable metal-centered chirality. Only the most stable diastereoisomer, according to DFT calculations, has been observed. A number of these complexes were assessed in the catalytic transfer hydrogenation and asymmetric transfer hydrogenation of acetophenone.
Fichier principal
Vignette du fichier
312-10.1021-om300738q-Accepted.pdf (1.5 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03157782 , version 1 (03-03-2021)

Identifiants

Citer

Muh-Mei Wei, Max García-Melchor, Jean-Claude Daran, Catherine Audin, Agusti Lledos, et al.. Coordination Chemistry of New Chiral P,N Ferrocenyl Ligands with Half-Sandwich Ruthenium(II), Rhodium(III), and Iridium(III) Complexes. Organometallics, 2012, 31 (18), pp.6669-6680. ⟨10.1021/om300738q⟩. ⟨hal-03157782⟩
16 Consultations
52 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More