✍ Scribed by R. Jiménez; M. Villar; M. Cueto; E. Grueso; J. Illanes; J. I. Cobrian; F. Cantón; I. Villa; J. M. Sánchez; S. Maza; J. M. Muñoz; C. Muñoz; R. Prado-Gotor
No coin nor oath required. For personal study only.
The base‐catalyzed linkage isomerization of [Co(NH~3~)~5~‐ONO]^2+^ to the nitro [(NH~3~)~5~Co‐NO~2~]^2+^ form is studied in various isodielectric water–cosolvent mixtures (methanol, ethanol, tert‐butyl alcohol, and 2‐propanol) at 298 K. In all cases, except for methanol–water mixtures, the rate constants increase with the proportion of cosolvent. Medium effects have been rationalized by using a multiparameter regression of solvent parameters which rationalizes the results obtained, including water–methanol mixtures. The experimental data, k~2~, in fact, are well correlated through the following equation:
equation image
where A, B, and G~exc~ are the acidity parameter, the basicity parameter, and the excess Gibbs free energy of the mixture, respectively. © 2004 Wiley Periodicals, Inc. Int J Chem Kinet 36: 410–415, 2004
📜 SIMILAR VOLUMES
## Abstract The kinetics of electron transfer reactions between [Fe(CN)~6~]^4−^ and [Co(NH~3~)~5~pz]^3+^ and between [Ru(NH~3~)~5~pz]^2+^ and [Co(C~2~O~4~)~3~]^3−^ was studied in concentrated salt solutions (Na~2~SO~4~, LiNO~3~, and Ca(NO~3~)~2~). An analysis of the experimental kinetic data, __k__
## Abstract The title reaction was studied in different water–cosolvent (methanol) mixtures. The results have been rationalized employing the Marcus–Hush treatment. To apply this treatment, the true, unimolecular, electron‐transfer rate constants (__k__~et~) were obtained from the experimentally me