Solvent effects on the kinetics of aquation of κ-chloro(diethylenetriamine) (ethylenediamine)cobalt(III) ion in mixed aqueous solvents

✍ Scribed by A. A. Zaghloul

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 129 KB
• Volume: 29
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/(sici)1097-4601(1997)29:6<431::aid-kin4>3.0.co;2-v

✦ Synopsis

Solvent effects on the kinetics of aquation of [Co(dien)(en)Cl] have been investigated within the temperature range (40 -60°C) in acetone-water and ethanol-water media of varying solvent compositions up to 60% by weight of the organic solvent component. The variation of the activation parameters (⌬G # , ⌬ H # , and ⌬S # ) with the mole fraction of the organic solvent component was analyzed and discussed. The isokinetic plots were linear in both solvent systems and revealed the existence of compensation effect due to a strong solute-solvent interactions. The correlation of log k with the ionizing power (Y) was found to be linear in both solvent mixtures. Moreover, the correlation of log k with was linear in case of ethanol-water medium while in case of acetone-water it was nonlinear.