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Preparation and Properties of Rh I and Ir I Ethylene Complexes Containing the Chiral P , N ‐Chelate Ligand (4 S )‐2‐[2‐(Diphenylphosphanyl)phenyl]‐4‐isopropyl‐1,3‐oxazoline
Author(s) -
Carmona Daniel,
Ferrer Joaquina,
Lalaguna Elena,
Lorenzo Mónica,
Lahoz Fernando J.,
Elipe Sergio,
Oro Luis A.
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(20021)2002:1<259::aid-ejic259>3.0.co;2-t
Subject(s) - chemistry , oxazoline , ethylene , isopropyl , rhodium , iridium , ligand (biochemistry) , olefin fiber , derivative (finance) , medicinal chemistry , chelation , enantiomer , polymer chemistry , stereochemistry , crystallography , organic chemistry , catalysis , biochemistry , receptor , financial economics , economics
The synthesis and characterization of the chiral complexes [MCl(η 2 ‐C 2 H 4 )(PN)] [M = Rh ( 1 ), Ir ( 2 )] and [IrCl(η 2 ‐C 2 H 4 ) 2 (PN)] ( 3 ) {PN = (4 S )‐2‐[2‐(diphenylphosphanyl)phenyl]‐4‐isopropyl‐1,3‐oxazoline}, including the X‐ray crystal structure of 2 , are reported. The solution behavior has been studied by NMR spectroscopy. For the rhodium complex 1 it is shown that a rotation of the olefin about the Rh‐midpoint of the ethylene axis must be operating in solution at ambient temperature. The iridium analogue 2 is, however, stereochemically rigid and interconverts in solution, in the presence of ethylene, with the bis‐ethylene derivative 3 .