282718-52-9Relevant academic research and scientific papers
Unexpected bond activations promoted by palladium nanoparticles
Lopez-Vinasco,Favier,Pradel,Huerta,Guerrero-Rios,Teuma,Gomez,Martin
, p. 9038 - 9044 (2014)
Thioether-phosphines, 1 and 2, were applied for the stabilisation of palladium nanoparticles (PdNPs) synthesised by a bottom-up methodology, using [Pd2(dba)3] as an organometallic precursor. For the phenyl containing ligand 1, small (dmean = 1.6 nm), well-defined and dispersed nanoparticles were obtained; however, ligand 2 involving a long alkyl chain led to agglomerates. NMR and GC-MS analyses throughout the synthesis of the nanomaterials revealed partial cleavage of ligands by C-S and C-P bond activations, and XPS spectra of the isolated nanoparticles indicated the presence of both thioether-phosphines and their fragments on the metallic surface. Reactivity studies of molecular palladium systems as well as on extended palladium surfaces pointed out that cluster entities are responsible for C-heteroatom activations, triggering structure modifications of stabilisers during the synthesis of PdNPs. the Partner Organisations 2014.
Transmetallation reactions of [Sn(R)2(Ph2 PC6H4-2-S)2] with metal complexes of the Group 10 Stereoselective synthesis of cis-[M(Ph2PC6H4-2-S)2] (M=Ni, Pd, Pt)
Canseco-González, Daniel,Gómez-Benítez, Valente,Hernández-Ortega, Simón,Toscano, Rubén A.,Morales-Morales, David
, p. 101 - 109 (2007/10/03)
The complexes cis-[M(Ph2PC6H4-2-S) 2] M=Ni, Pd, Pt were stereoselectively synthesized by transmetallation reactions of [M(Cl)2(NCC6 H5)2] M=Pd, Pt or NiCl2·6H2O with [Sn(R)2(Ph2PC6H4-2-S) 2] R=Ph, nBu or tBu. The conformation of the Pd and Pt derivatives being unequivocally confirmed by single crystal X-ray diffraction studies showing both metal centers to be into a slightly distorted square planar environment, the main distortion being due to the steric hindrance caused by the aromatic rings in the phosphine moiety.
