Affiliation:
1. Beirut Arab University
2. Alexandria University
Abstract
The rate of aquation of bromopentaammine cobalt(III) ion in the presence of different types of dicarboxylate solutions containing tert-butanol (40% V/V) have been measured spectrophotometrically at different temperatures (30-600°C) in the light of the effects of ion-pairing on reaction rates and mechanism. The thermodynamic and extrathermodynamic parameters of activation have been calculated and discussed in terms of solvent effect on the ion-pair aquation reaction. The free energy of activation ∆Gip* is more or less linearly varied among the studied dicarboxylate ion-pairing ligands indicating the presence of compensation effect between ∆Hip* and ∆Sip*. Comparing the kip values with respect of different buffers at 40% of ter-butanol is introduced.
Publisher
Trans Tech Publications, Ltd.
Reference14 articles.
1. E.L. Chang, C. Sinners and D.A. Knight, pharmaceuticals, 3 (2010) 1711.
2. Wachter, W.; Kunz, W.; Buchner, R.; Hefter, G. J. Phys. Chem. A 109, 8675–8683(2005).
3. Dill, K. A.; Truskett, T. M.; Vlachy, V.; Hribar-Lee, B. Annu. ReV. Biophys. Biomol. Struct. 34, 173–199, (2005).
4. Jungwirth, P.; Tobias, D. Chem. ReV. 106, 1259–1281(2006).
5. Hess, B.; Holm, C.; van der Vegt, N. Phys. ReV. Lett., 96, 147801 (2006).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献