Triarylphosphine Ligands with Pendant Electron-Rich “[Fe(κ2-dppe)(η5-C5Me5)(C≡C)]–” Substituents
摘要:
The synthesis of four triaylphosphine ligands featuring electron-rich Fe(II) "Fe(kappa(2)-dppe)(eta(5)-C5Me5)C C-" pendant substituents in para and meta position(s) (1-4) is reported along with that of their corresponding radical cations (1- 2[PF6] or 3-4[PF6](3)). These triarylphosphines possessing redox-active organometallic substituents constitute a new class of phosphorus-based metallo-ligands. In contrast to many related ferrocenylphosphines, these metallo-ligands are stable and isolable in two redox-states. Their steric and electronic properties are also briefly discussed.