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Palladium( II ) Complexes Containing a Pyridinyliminophosphorane Ligand
Author(s) -
Wu HungRen,
Liu YiHung,
Peng ShieMing,
Liu ShiuhTzung
Publication year - 2003
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/ejic.200300122
Subject(s) - chemistry , norbornene , palladium , denticity , cationic polymerization , steric effects , alkyl , ethylene , ligand (biochemistry) , stereochemistry , crystal structure , catalysis , medicinal chemistry , polymer chemistry , copolymer , organic chemistry , polymer , biochemistry , receptor
A series of new pyridinyliminophosphorane bidentate ligands with different steric environments [(2‐C 6 H 4 N)PPh 2 =NAr ( NPN )] and their methylpalladium complexes [PdClMe( NPN )] were prepared. From the crystal structure analysis it is evident that the alkyl ligands are always trans to the pyridinyl nitrogen donor, revealing a σ‐donating ability of the iminophosphorane. However, the two Pd−Cl bonds in [PdCl 2 ( NPN )] are essentially the same length. Cationic palladium complexes catalyzed the copolymerization of norbornene/ethylene as well as CO/norbornene. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)