Bonding and Substituent Effects in Electron-Rich Mononuclear Ruthenium σ-Arylacetylides of the Formula [(η2-dppe)(η5-C5Me5)Ru(CC)-1,4-(C6H4)X][PF6]n (n = 0, 1; X = NO2, CN, F, H, OMe, NH2) - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Organometallics Année : 2006

Bonding and Substituent Effects in Electron-Rich Mononuclear Ruthenium σ-Arylacetylides of the Formula [(η2-dppe)(η5-C5Me5)Ru(CC)-1,4-(C6H4)X][PF6]n (n = 0, 1; X = NO2, CN, F, H, OMe, NH2)

Résumé

This study reports the isolation and the structural (X-ray), UV−vis, and NMR characterization of a series of electron-rich Ru(II) acetylide complexes of the formula (η2-dppe)(η5-C5Me5)Ru(CC)-1,4-(C6H4)X (1a−f; X = NO2, CN, F, H, OMe, NH2) and (η2-dppe)(η5-C5Me5)Ru(CC)-1,3-(C6H4)F (1c-m), as well as the spectroscopic (near-IR and ESR) in situ characterization of the corresponding elusive Ru(III) radical cations. The spectroscopic data are discussed in connection with DFT computations, and a consistent picture of the electronic structure of these Ru(II) and Ru(III) acetylide complexes is proposed. Notably, the strong reactivity of the Ru(III) radicals evidenced in this contribution constitutes a major difference with the relative stability of the known iron analogues.

Dates et versions

hal-00862733 , version 1 (17-09-2013)

Identifiants

Citer

Frédéric Paul, Benjamin G. Ellis, Michael I. Bruce, Loic Toupet, Thierry Roisnel, et al.. Bonding and Substituent Effects in Electron-Rich Mononuclear Ruthenium σ-Arylacetylides of the Formula [(η2-dppe)(η5-C5Me5)Ru(CC)-1,4-(C6H4)X][PF6]n (n = 0, 1; X = NO2, CN, F, H, OMe, NH2). Organometallics, 2006, 25 (3), pp.649-665. ⟨10.1021/om050799t⟩. ⟨hal-00862733⟩
157 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More