853657-48-4Relevant academic research and scientific papers
Oxidative addition reaction of diarylplatinum(ii) complexes with MeI in ionic liquid media: A kinetic study
Nabavizadeh, S. Masoud,Shahsavari, Hamid R.,Sepehrpour, Hajar,Hosseini, Fatemeh Niroomand,Jamali, Sirous,Rashidi, Mehdi
, p. 7800 - 7805 (2010)
A kinetic study of the oxidative addition reaction of diarylplatinum(ii) complexes [Pt(p-MeC6H4)2(NN)] (1a: NN = 1,10-phenanthroline (phen) and 1b: NN = 4,4-di-tert-butyl-2,2-bipyridine ( tBu2bpy)) with MeI in ionic liquids 1-butyl-3- methylimidazolium bis(trifluoromethylsulfonyl) imide ([bmim][bta]) or 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) is described. The reactions were investigated as a function of MeI concentration and temperature under pseudo-first-order conditions using UV-vis spectroscopy techniques. In general, the oxidative addition reactions in ionic liquids followed an SN2 mechanism, similar to that reported for the related reactions in conventional solvents, e.g. benzene or acetone. The reaction rates in different solvents followed the order acetone > ionic liquids > benzene. The trend in the values of k2 clearly indicated that ionic liquids behave like conventional solvents and that no particular 'ionic liquid effect' was detected in this kind of reaction. The effect of solvent on the reactions was examined using a linear solvation energy relationship (LSER) based on the Kamlet-Taft solvent scale. The activation parameters, ΔH ? and ΔS?, were obtained for the reactions in each solvent and the investigation of enthalpy-entropy compensation confirmed that the mechanism operated in all solvents is similar. The Royal Society of Chemistry 2010.
Influence of anionic components of ionic liquid solvents on oxidative addition reactions of organoplatinum(ii) complexes with MeI
Nabavizadeh, S. Masoud,Sepehrpour, Hajar,Shahsavari, Hamid R.,Rashidi, Mehdi
, p. 1739 - 1743 (2012/09/25)
The effects of several imidazolium-based ionic liquids on the rate of the oxidative addition reactions of organoplatinum(ii) complexes [Pt(p-MeC 6H4)2(NN)], in which NN is either 1,10-phenanthroline (phen), 1a, or 4,4′-di-tert-butyl-2,2′- bipyridine (tBu2bpy), 1b, with MeI to give the organoplatinum(iv) products [Pt(p-MeC6H4) 2MeI(NN)] were investigated as a function of the ionic liquid (as solvent) using UV-vis spectroscopy techniques. The obtained rate constants and activation parameters showed a dependence on the nature of the anionic component of the ionic liquid as related to the polarity/polarizability parameter, π*, of the ionic liquids.
Secondary kinetic deuterium isotope effects in the reaction of mel with organoplatinum(II) complexes
Rashidi, Mehdi,Nabavizadeh, S. Masoud,Akbari, Alireza,Habibzadeh, Sepideh
, p. 2528 - 2532 (2008/10/09)
Secondary α-deuterium (α-D) kinetic isotope effects (KIEs) have been determined for the reactions of the (diimine)diarylplatinum(II) complexes [Pt(p-MeC6H4)2(NN)] (NN = bipyridine (bpy), 1a; NN = 4,4′-dimethyl-2,2′-bipyrid
