55500-69-1Relevant academic research and scientific papers
Self-assembled monolayers based on Pd-containing organometallic thiols: Preparation and structural characterization
Vitaliano, Rosa,Fratoddi, Ilaria,Venditti, Iole,Roviello, Giuseppina,Battocchio, Chiara,Polzonetti, Giovanni,Russo, Maria Vittoria
, p. 14730 - 14740 (2009)
Multilayers and self-assembled monolayers of on-purpose-prepared organometallic thiolates, trans[Pd(PBu3)2(SCOCH 3)2], trans-[(C6H5C≡C) Pd(PBu3)2(SCOCH3)],
Preparation of models and oligomers of metal alkynyls NMR, GPC and X-ray structural characterization of building blocks for the construction of molecular devices
La Groia, Alessandra,Ricci, Antonella,Bassetti, Mauro,Masi, Dante,Bianchini, Claudio,Lo Sterzo, Claudio
, p. 406 - 420 (2007/10/03)
A systematic study has been carried out for the use of the palladium-based Extended One Pot (EOP) synthetic protocol toward the preparation of metal alkynyl oligomers of general formula [- C≡C-Ar-C≡C-M(L)m -]n (M=Pt, Pd). Model compounds of type trans-M(PBu 3)2(C≡CC6H5) 2 have been prepared by the reaction of tributyltinethynylbenzene with trans-M(PBu3)2 Cl2, in the absence of palladium catalysis, since the presence of catalytic Pd(PPh3)4 yields reaction mixtures containing starting material, product and intermediate complex trans-MCl (PBu3)2(C≡CC6H5). Palladium catalysis has been used for the formation of the bistinacetylide compounds Bu3Sn-C≡C- Ar-C≡C-SnBu3 (Ar=C6 H4; bis(2,5-n-octyloxy)C6H4). Subsequent coupling of these compounds with MCl2(PBu3) 2 in the absence of palladium catalyst yields metal alkynyl oligomers. Comparison of 31P-NMR and gel permeation chromatography (GPC) analyses indicates that the GPC technique represents a reliable method to estimate polymer chain lengths for polymers bearing branched aromatic spacers, in spite of the rigid-rod shape of the polymer backbone. Single crystal X-ray determinations of model compounds demonstrate the essential role of side substituents in the aromatic ring to control the supramolecular order and, as a consequence, the optoelectronic properties of materials.
Nuclear Magnetic Resonance (1H-, 13C-, 31P-, 195Pt-NMR)-Studies of Alkynyl Derivatives of Pt(II), Pd(II) and Ni(II)
Sebald, Angelika,Wrackmeyer, Bernd,Beck, Wolfgang
, p. 45 - 56 (2007/10/02)
The NMR parameters (1H, 13C, 31P, 195Pt) of compounds of the type cis- and trans- (M = Ni, Pd, Pt) are reported.The chemical shifts δ13C and δ195Pt (together with UV data) indicate the presence of ?-backbonding from the metal into the ?*CC orbitals.This also explaines some unusual features of the coupling constants J (13C1H), J (13C13C) and J (195Pt13C).The NMR parameters reflect an increase in the amount of ?-backbonding for Pt Pd Ni. - Keywords: Alkynyl Pt(II)-, Pd(II)-, Ni(II)-complexes, Multinuclear NMR
