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Synthesis, and Solution and Solid‐State Structures of (η 3 ‐Allyl){(4 S )‐4‐benzyl‐2‐[2′‐(diphenylphosphino)phenyl]‐ 4,5‐dihydrooxazole‐ P,N }palladium(II) Hexafluorophosphates. Comparison with Dichloro{(4 S )‐2‐[2′‐(diphenylphosphino)phenyl]‐4,5‐dihydro‐4‐phenyloxazole‐ P,N }zinc(II)
Author(s) -
Baltzer Natalie,
Macko Ludwig,
Schaffner Silvia,
Zehnder Margareta
Publication year - 1996
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19960790322
Subject(s) - chemistry , palladium , ligand (biochemistry) , nuclear magnetic resonance spectroscopy , solid state , crystal structure , medicinal chemistry , crystallography , stereochemistry , catalysis , organic chemistry , biochemistry , receptor
Crystal and solution structures of the [Pd II (η 3 ‐allyl)] and of the [Pd II (η 3 ‐1,3‐diphenylallyl)] complexes, 4 and 5 , respectively, with (4 S )‐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{(4 S )‐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 .