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Oxidation of bis(dimethylglyoximato)-bis(isothiocyanato)-cobaltate(III) with peroxodisulfate

V. Holba, J. Benko, O. Grančičová, and O. Volárová

Department of Physical Chemistry, Faculty of Natural Sciences, Comenius University, CS-842 15 Bratislava

 

Abstract: The kinetics of oxidation of one coordinatively bound NCS" ligand in bis(dimethylglyoximato)-bis(isothiocyanato)cobaltate(III) ion with peroxo­disulfate were investigated in 0.001—0.01 M-HCl04. The dissociation con­stant together with the thermodynamic parameters of dissociation of the complex as a weak acid were determined potentiometrically. The kinetic measurements lead to the conclusion that no cleavage of the Co—NCS bond occurs in the rate-determining step.

Full paper in Portable Document Format: 431a113.pdf

 

Chemical Papers 43 (1) 113–119 (1989)

Tuesday, December 06, 2022

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