SCHEDULED MAINTENANCE
Synthesis of η6-arene complexes of molybdenum containing β-ketophosphine and related P,O mixed donor ligands
Abstract
The reactions of the ligands Ph2PCH2C(O)R (R = Ph, NPh2) with the η6-arene molybdenum complexes [Mo(η3-C3H5)(μ-Cl)(η6-C6H5R)]2 (R = H, Me) have been investigated. A series of complexes in which the keto- or amidophosphine acts as a monodentate P ligand or as a neutral or anionic P,O chelating ligand have been synthesised and characterised. The crystal structures of the compounds [Mo(η3-C3H5)Cl(η6-C6H5Me){Ph2PCH2C(O)Ph}], [Mo(η3-C3H5){Ph2PCH2C(O)NPh2-κ2P,O}(η6-C6H5Me)][PF6] and [Mo{Ph2PCH![[horiz bar, triple dot above]](https://www.rsc.org/images/entities/char_e0f1.gif)
C(O)Ph-κ2P,O}2(η6-C6H5R)]
(R = H, Me) have been determined. Interesting differences in the reactivity of the ketophosphine ligand versus the amidophosphine ligand were discovered and an unprecedented hydrogen–deuterium exchange of methylene and olefinic protons has been observed for the coordinated neutral or anionic ketophosphine ligands.
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