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Kinetic solvent isotope effect on the redox reaction of uranium(IV) ions with ferricyanide ions

Ľ. Treindl and Ľ. Adamčíková

Department of Physical Chemistry, Faculty of Natural Sciences, Komenský University, 801 00 Bratislava

 

Abstract: The kinetic solvent isotope effect on t h e redox reaction of U(IV) ions with ferricyanide ions was studied. The measured temperature-dependent values of kH2O/kD20 as well as the values of δΔH and δΔS were interpreted from the point of view of t h e proposed reaction mechanism. The increase in activation enthalpy in heavy water by 2.5 kcal mol-1 when compared with light water supports the idea of the electron transfer between U(IV) and HFe(CN)62-ions by  the —OH (or —OD) bond mechanism.

Full paper in Portable Document Format: 274a433.pdf

 

Chemical Papers 27 (4) 433–436 (1973)

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