Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures

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Title:Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures
Creators:
Vollárová, Oľga
Benko, Ján
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 58, 5, pp. 1001-1006

Abstract

The kinetics of oxidation of [Co(en)<sub>2</sub>SCH<sub>2</sub>COO]<sup>+</sup> with S<sub>2</sub>O<sub>8</sub><sup>2-</sup> was studied in water-methanol and water-tert-butyl alcohol mixtures. Changes in the reaction activation parameters ∆<i>H</i><sup>≠</sup> and ∆<i>S</i><sup>≠</sup> with varying concentration of the co-solvent depend on the kind of the latter, which points to a significant role of salvation effects. The solvation effect on the reaction is discussed based on a comparison of the transfer functions ∆<i>H</i><sub>t</sub><sup>0</sup>, ∆<i>S</i><sub>t</sub><sup>0</sup> and ∆<i>G</i><sub>t</sub><sup>0</sup> for the initial and transition states with the changes in the activation parameters accompanying changes in the CO-solvent concentration. The transfer enthalpies of the reactant were obtained from calorimetric measurements.

Title:Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures
Creators:
Vollárová, Oľga
Benko, Ján
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:58
Number:5
Page Range:pp. 1001-1006
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19931001UNSPECIFIED
ID Code:218
Item Type:Article
Deposited On:06 Feb 2009 16:59
Last Modified:06 Feb 2009 15:59

Citation

Vollárová, Oľga; Benko, Ján (1993) Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures. Collection of Czechoslovak Chemical Communications, 58 (5). pp. 1001-1006. ISSN 0010-0765

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