THERMODYNAMIC AND KINETIC INVESTIGATION OF THE SOLVENT EFFECT ON THE OXIDATION OF [CO(EN)2SCH2COO]- IN WATER-METHANOL AND WATER TERT-BUTYL ALCOHOL MIXTURES( WITH S2O82)

Authors
VOLLAROVA O BENKO J
Citation
O. Vollarova et J. Benko, THERMODYNAMIC AND KINETIC INVESTIGATION OF THE SOLVENT EFFECT ON THE OXIDATION OF [CO(EN)2SCH2COO]- IN WATER-METHANOL AND WATER TERT-BUTYL ALCOHOL MIXTURES( WITH S2O82), Collection of Czechoslovak Chemical Communications, 58(5), 1993, pp. 1001-1006
Citations number
18
Categorie Soggetti
Chemistry
Journal title
Collection of Czechoslovak Chemical Communications → ACNP
ISSN journal
00100765
Volume
58
Issue
5
Year of publication
1993
Pages
1001 - 1006
Database
ISI
SICI code
0010-0765(1993)58:5<1001:TAKIOT>2.0.ZU;2-H
Abstract
The kinetics of oxidation of [Co(en)2SCH2COO]+ with S2O82- was studied in water-methanol and water-tert-butyl alcohol mixtures. Changes in t he reaction activation parameters DELTAH(not-equal) and DELTAS(not-equ al) with varying concentration of the co-solvent depend on the kind of the latter, which points to a significant role of solvation effects. The solvation effect on the reaction is discussed based on a compariso n of the transfer functions DELTAH(t)0, DELTAS(t)0 and DELTAG(t)0 for the initial and transition states with the changes in the activation p arameters accompanying changes in the co-solvent concentration. The tr ansfer enthalpies of the reactants were obtained from calorimetric mea surements.