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New Organometallic Palladium(II) Complexes Containing P ∩ N Ligands – Synthesis, Characterization and X‐ray Structure
Author(s) -
Crociani Laura,
Bandoli Giuliano,
Dolmella Alessandro,
Basato Marino,
Corain Benedetto
Publication year - 1998
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/(sici)1099-0682(199811)1998:11<1811::aid-ejic1811>3.0.co;2-r
Subject(s) - chemistry , palladium , ethylamine , cationic polymerization , ligand (biochemistry) , medicinal chemistry , aniline , methylamine , stereochemistry , oxidative addition , organometallic chemistry , group 2 organometallic chemistry , polymer chemistry , crystallography , catalysis , molecule , crystal structure , organic chemistry , biochemistry , receptor
New neutral organometallic palladium(II) complexes, [PdPhI(PNMe 2 )] ( 1 ), [PdPhI(PC=NMe)] ( 2 ), [PdPhI(PC=NEt)] ( 3 ), and [PdMeCl(PNMe 2 )] ( 4 ), {PNMe 2 means N , N ‐dimethyl‐2‐(diphenylphosphanyl)aniline; PC=NMe means N ‐[2‐(diphenylphosphanyl)benzylidene]‐ N ‐methylamine; PC=NEt means N ‐[2‐(diphenylphosphanyl)benzylidene]‐ N ‐ethylamine} have been synthesized by oxidative addition of PhI to [Pd(dba) 2 ] in the presence of the P ∩ N ligand ( 1 – 3 ), or by substitution reaction on [PdMeCl(COD)] with PNMe 2 ( 4 ). Cationic σ‐organometallic species [PdR(PPh 3 )(P ∩ N)] + are obtained upon treating complexes of the type [PdRX(P ∩ N)] with PPh 3 and AgCF 3 SO 3 and consist predominantly of the trans ‐P,P isomer in CDCl 3 solution, as shown by NMR spectroscopic studies. The cationic η 3 ‐allyl complex [Pd(η 3 ‐all)(PNMe 2 )]PF 6 has also been prepared and characterized, both in solution and in the solid state. Compounds [PdPhI(PNMe 2 )] ( P 2 1 / n ), [PdPhI(PC=NMe)] ( P 1¯), [PdPhI(PC=NEt)] ( P 1¯), and [Pd(η 3 ‐all)(PNMe 2 )]PF 6 ( P 1¯) have been authenticated by X‐ray analysis