925222-68-0Relevant academic research and scientific papers
Coordination chemistry of dinucleating P2N2S ligands: Preparation and characterization of cationic palladium complexes
Siedle, Gabriel,Lassahn, Paul-Gerhard,Lozan, Vasile,Janiak, Christoph,Kersting, Berthold
, p. 52 - 61 (2007/10/03)
The thioethers (4-tert-butyl-2,6-bis((2-(diphenylphosphino)ethylimino) methyl)phenyl)(tert-butyl)sulfane (tBuL3) and (4-tert-butyl-2,6- bis((2-(diphenylphosphino)ethylamino)methyl)phenyl)(tert-butyl)sulfane (tBuL4) react readily with [Pd(NCMe)2Cl2] to give the dinuclear palladium thiophenolate complexes [(L3)Pd 2(Cl)2]+ (4) and [(L4)Pd 2(-Cl)]2+ (5) (HL3 = 2,6-bis((2- (diphenylphosphino)ethylimino)methyl)-4-tert-butylbenzenethiol, HL4 = 2,6-bis((2-(diphenylphosphino)ethylamino)methyl)-4-tert-butylbenzenethiol). The chlorides in 4 could be replaced by neutral (MeCN) and anionic ligands (NCS-, N3-, I-, CN-) to give the dinuclear PdII complexes [(L3)Pd 2(NCMe)2]3+ (6), [(L3)Pd 2(SCN)2]+ (7), [(L3)Pd 2(N3)2]+ (8), [(L 3)Pd2(I)2]+ (9), and [(L 3)Pd2(CN)2]+ (10). The acetonitrile ligands in 6 are readily hydrated to give the corresponding amidato complex [(L3)Pd2(NHCOMe)]2+ (11). All complexes were isolated as perchlorate salts and studied by infrared, 1H, and 31P NMR spectroscopy. In addition, complexes 4[ClO 4]·EtOH, 5[ClO4]2, 9[ClO4], 10[ClO4]·EtOH, and 11[ClO4]2· MeCN·MeOH have been characterized by X-ray crystallography. The dipalladium complex 4 was found to catalyse the vinyl-addition polymerization of norbornene in the presence of MAO (methylalumoxane) and B(C6F 5)3/AlEt3. This journal is The Royal Society of Chemistry.
