Synthesis, and solution and solid-state structures of (eta(3)-allyl){(4S)-4-benzyl-2-[2'-(diphenylphosphino)phenyl]-4,5-dihydrooxazole-P,N}palladium(II) hexafluorophosphates. Comparison with dichloro{(4S)-2-[2'-(diphenylphosphino)phenyl]-4,5-dihydro-4-phenyloxazole-P,N}zinc(II)

Crystal and solution structures of the [Pd-II(eta(3)-allyl)] and of the [Pd-II(eta(3)-1,3-diphenylallyl)] complexes, 4 and 5, respectively, with (4S)-4-benzyl-2-[2'-(diphenylphosphino)phenyl]-4,5-dihydrooxazole (3) were determined by X-ray crystallography and 2D-NMR spectroscopy. Complex 4 proved to be disordered with both diastereoisomeric complexes in the crystal. The results of X-ray and NMR experiments demonstrate a good agreement between solution and solid-state equilibria of the two isomers. A comparison with dichloro{(4S)-2-[2'-(diphenylphosphino)phenyl]-4,5-dihydro-4-phenyloxazole-P,N}zinc(II) (2b) shows a surprising conformational stability of the coordinated phosphinooxazole ligand 3.