71498-97-0Relevant academic research and scientific papers
Nucleophilic Displacement of Halides from Dihalogenoplatinum(II) Complexes containing a Chelating Thioether. Kinetics and Equilibria
Pitteri, Bruno,Marangoni, Giampaolo,Cattalini, Lucio,Canovese, Luciano
, p. 169 - 174 (1994)
Kinetic and equilibrium measurements on the displacement of halides from the substrates (X, Y = Cl, Cl; Cl, Br; Br, Br; Br, I; I, I; Cl, I) with the nucleophiles Cl(1-), Br(1-) and I(1-) have been carried out in methanol at 25 deg C, I = 0.5 mol dm3 (LiClO4).The results are discussed in terms of the relative stability of the planar ground and five-co-ordinate transition states, and the lability and kinetic cis effects of co-ordinated halides are compared.All substrates appear to be characterized by a sort of stereoelectronic hindrance leading to retardation effects, mainly in the second-order substitution pathway.
