| Abstract
| - Detailed NMR studies on a series of Pd and Pt allyl complexes containing phosphoramidite ligands with NCH(CH3)Ph side chains are reported. When a coordination position becomes available, e.g., via abstraction of a chloride ligand, one double bond of the phenyl group of the side chain complexes to the metal, affording an η2-olefin structure. These allyl complexes exhibit a number of dynamic processes, and these have been elucidated via low-temperature NMR studies combined with 2D NOESY methods. DFT calculations confirm the ability of the amine side chain to coordinate to the metal almost without distortion, leading to a weak η2-arene−Pd bonding interaction (∼13 kcal mol−1). The latter result is supported by the NMR studies.
- NMR studies on a series of cationic Pd and Pt allyl complexes containing phosphoramidite (and related) ligands with NCH(CH3)Ph side chains show that the metal can weakly complex one double bond of the phenyl group, affording an η2-olefin structure. DFT calculations confirm the ability of the amine side chain to approach the metal.
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