Selenophosphine Derivatives with Pendant Electron-​Rich Fe(κ2-​dppe)​(η5-​C5Me5)​C≡C- Substituents - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Organometallics Année : 2014

Selenophosphine Derivatives with Pendant Electron-​Rich Fe(κ2-​dppe)​(η5-​C5Me5)​C≡C- Substituents

Résumé

Five new selenophosphines (5a-​d and 7) bearing organometallic Fe(κ2-​dppe)​(η5-​C5Me5)​C≡C- substituents were synthesized and structurally characterized in order to det. the steric and electronic parameters of the parent metallo-​phosphines (1a-​d and 2)​. Their cone angles were estd. from available structural data, and their electronic parameters were derived from the 1JPSe coupling consts. DFT calcns. suggest that 1JPSe consts. can be used to det. their electronic parameters in spite of the existence of the low-​lying excited states for 5a-​d. Strong solvent effects were evidenced on 1JPSe, stressing the need to use a single solvent (CDCl3) for measuring these coupling consts. if comparison of the electronic parameter of these with existing data is sought. Among the parent metallo-​phosphines, 2 appears to be the most electron donating ligand by far. According to its 1JPSe value, it resembles a tris(alkyl)​phosphine but presents a significantly larger Tolman cone angle (θT ≈ 172°) than PPh3 (θT ≈ 145°)​.
Fichier non déposé

Dates et versions

hal-01088476 , version 1 (28-11-2014)

Identifiants

Citer

Ayham Tohmé, Hiba Sahnoune, Thierry Roisnel, Vincent Dorcet, Jean-François Halet, et al.. Selenophosphine Derivatives with Pendant Electron-​Rich Fe(κ2-​dppe)​(η5-​C5Me5)​C≡C- Substituents. Organometallics, 2014, 33 (13), pp.3385-3398. ⟨10.1021/om500211e⟩. ⟨hal-01088476⟩
70 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More