Kinetics of the solvolysis of a cationic and of an anionic chloro-cobalt(III) complex in water-propan-1-ol mixtures |
| |
| Authors: | Kamal H Halawani Cecil F Wells |
| |
| Institution: | (1) Chemistry Department, Faculty of Applied Science, Um Al-Qura University, P.O. Box 3711, Makah Al-Mukaramah, Saudi Arabia;(2) School of Chemistry, University of Birmingham, B15 2TT Edgbaston, Birmingham, England |
| |
| Abstract: | Summary The kinetics of the solvolysis of the ions Co(NH3)5Cl]2+ and Co(CN)5Cl]3– have been investigated in a range of water-rich mixtures of water with n-PrOH at various temperatures. The variation of the enthalpies and entropies of activation with solvent composition show extrema in composition ranges where the physical properties of the mixtures, influenced by changes in solvent structure, also show extrema. From the application of a free energy cycle to the process of the initial state going to the transition state, it is concluded for the solvolyses of both complexes that the species of CoIII in the transition state is more stable in water + n-PrOH mixtures than the ionic complexes of CoIII in the initial state. The results are compared with those for the solvolysis of these and related complexes in mixtures of water with other alcohols. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
