Synthesis, and Solution and Solid‐State Structures of (η3‐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 [PdII(η3‐allyl)] and of the [PdII(η3‐1,3‐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.