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Mono-complex formation kinetics of 2-acetylcyclohexanonatochromium(III) in aqueous solution

✍ Scribed by Carlos A. Blanco; José M. Hernando; Manuel Mateo

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
451 KB
Volume
24
Category
Article
ISSN
0538-8066

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✦ Synopsis

The kinetics and mechanism of the reaction of complexation of chromium(II1) with 2-acetylcyclohexanone has been investigated spectrophotometrically in aqueous solution at 50°C and ionic strength 0.5 mol dm-3 NaC104. The equilibrium constants of the complex have been determined. The mechanism proposed to account for the kinetic data involves a double reversible pathway where both Cr3' and Cr(OH)" react with the enol tautomer of the ligand with rate constants of 9.6 X dm3 mol-' s-l, respectively. Some discussions are made on the basis of Eigen-Wilkins theory considering the effect of solvent exchange on the complex formation. dm3 mol-' s-', and 3.69 X

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