Synthesis and C-13 NMR study of the triangulo-clusters [Pt-3(mu-CO)(3-n)(mu-SO2)(n)(PR3)(3)] (n=0-3)
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The first part of this work deals with oxidative addition reactions of the triangulo platinum cluster [Pt3(μ-CO)3(PCy3)3]. Reactions with the electrophilic molecules ICH2CN and X2 (X = I and Br) and with the weakly polar reagent Ph3SnH have been studied. A ...
In the presence of a Lewis or protic acid and at low temperature, 1,3-dioxy-1,3-dienes add to sulfur dioxide generating zwitterionic intermediates that can react with carbon nucleophiles such as allylsilanes. After a retro-ene elimination of SO2, valuable ...
The goal of this thesis was to open a new route to the synthesis of conjugated trienes using a new SO2-based C-C bond forming reactions developed in Lausanne. In addition, the potential of SO2 for applications in synthetic organic chemistry has been exploi ...
The C2-sym. electron-poor ligand (R)-BINOP-F (4; (R)-2,2'-[bis(pentafluorophenyl)phosphinoxy]-1,1'-binaphthalene) was prepd. by reaction of (R)-BINOL ((R)-1,1'-binaphthalene-2,2'-diol) with bromobis(pentafluorophenyl)phosphine in the presence of NEt3. The ...
At low temperature, 1-alkoxy-1,3-dienes add to sulfur dioxide activated by a Lewis or protic acid generating zwitterionic intermediates that can be quenched by enoxysilanes. The resulting beta,gamma-unsaturated silyl sulfinates can be desilylated by 1:1 Pd ...
We have carried out an ab initio molecular dynamics simulation of liquid oxygen, a molecular fluid in which the individual 02 units carry a molecular magnetic moment. In addition to the atomic and electronic structures, our simulation describes the evoluti ...
A Rh-103, P-31 and C-13 NMR study of [Rh-4(CO)(6)(mu-PPh2)(4)] in CD2Cl2 indicates that the strongly bonded, bridging, anionic ligand PPh2- takes part in the site exchange of the carbonyl ligands and is actually mobile about the metallic surface of this cl ...
The solubility of carbon monoxide in 37 ionic liquids and in some organic solvents has been determined using high-pressure C-13 NMR spectroscopy; a method for predicting the CO solubility is demonstrated, and it was shown that the rate of the hydroformylat ...
The distinct element method (DEM) is an approach to modelling and simulation well suited to the study of discontinuous phenomena. By tracking each element individually and dealing explicitly with every interaction among the elements, the DEM allows one to ...