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2017-09-30T11:59:49Z
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Kinetic studies of ion-pairing effects on the aquation of chloropentaammine cobalt(III) complex in different dicarboxylate media at 30% of tert-butanol
Zeitouni, Farah Samih
Chaaban, Jinane Kamal
Hamed, Ramzi Kassem
Ion-pair
Aquation
tert-Butanol
Solvent effect
Dicarboxylic acid
Cobalt(III) complex
The study of the kinetic aquation of chloropentaammine cobalt(III) ion in the presence of different types of dicarboxylate solutions (Malonate, malate, tartarate and succinate), in mixed solvent media of water with tert-butanol (30%, v:v) is investigated spectrophoto-metrically at different temperatures (30-60 °C) in the light of the effects of ion-pairing on reaction rates and mechanism. Comparison of the kip (Rate constant of ion-pairing) values with respect of different buffers (Malonate, malate, tartarate and succinate) at 30% of tert-butanol is introduced. Examination of the linear free energy relationship (LFER) at the mentioned conditions will lead to diagnosethe mechanism. The free energy of activation ΔG*ip is more or less linearly varied among the studied dicarboxylate ion-pairing ligands indicating the presence of compensation effect between ΔH*ip and ΔS*ip.
Atlanta Publishing House LLC
2017-09-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://www.eurjchem.com/index.php/eurjchem/article/view/1609
10.5155/eurjchem.8.3.273-278.1609
European Journal of Chemistry; Vol. 8 No. 3 (2017): September 2017; 273-278
2153-2257
2153-2249
eng
https://www.eurjchem.com/index.php/eurjchem/article/view/1609/pdf_1609