The Exchange of Water between Co(NH3)5H2O+++ and Solvent

Abstract

Articles you may be interested inElectronic and vibrational spectra of protonated benzaldehyde-water clusters, [BZ-(H2O)n≤5]H+: Evidence for ground-state proton transfer to solvent for n ≥ 3

The Kinetics of Aquation of cis-Dichloro-bis-(ethylenediamine)-chromium(III) Ion1

“…This observation suggests that the two metal complexes follow a similar mechanism during the course of acid hydrolysis. Although the purpose of this work was not to attempt to decide upon a mechanism, the results would seem to favor for the chromium complex the Sxl mechanism suggested by Basolo,Pearson,et al,6 for the acid hydrolysis of cobalt complexes.…”

“…0.05 M NaClOj. 6 Value obtained by Pearson, et alM ' Values obtained by Mathieu.11 d 0.012 M HN03 and 0.01 M complex used. 6 See Discussion.…”

The Solvent Exchange of Co(CH3NH2)5OH23+

“…It is likely that the k -: , obtained presently is an upper limit, for the inclusion of any occluded water in the mass-spectroscopic analysis wo~ild produce an apparently faster exchange rate. In ally event tlie ratio k -, / k _ : , is 0.34 for the metliylamine complexes \vhicli is allnost ideniical to tlie ratio 0.31 for tlie corresponding ammines (9,10). Tlie high value for c derives mainly fro111 the high value for I<.…”

Reaction Kinetics

“…Thus, there is no kinetic basis for distinguishing between SN 1 and SN2 mechanisms, both of which fit the kinetic laws. Rutenberg & Taube (178) observed that the rate of exchange between Co(NHa)"HzO I I I and water is diminished when reaction to form the sulfato complex takes place simultaneously, and concluded from this that the mechanism is SNl at least in part. By arguments based on comparisons of rates of aquation for ions of the type Co (A-A)2Ch+ (with various chelating groups A-A) Pearson, Boston & Basolo (179) concluded that the data favor an SN l mechanism.…”