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Kinetics of the solvolysis of the trans-dichlorobis(1,2-diaminoethane)-cobalt(III) Ion in water + urea mixtures by Grahame S. Groves; Cecil F. Wells is a Chemistry article available to read on EtoBox.

What is Kinetics of the solvolysis of the trans-dichlorobis(1,2-diaminoethane)-cobalt(III) Ion in water + urea mixtures about?

Following the kinetic investigation of the solvolysis of a range of cobalt(II1) complexes in mixtures of water + cosolvent where the cosolvent enhances the solvent structure and decreases the dielectric constant, kinetic data are now reported for such a solvolysis in water + urea where urea acts as a structure breaker and enhances the dielectric constant. A plot of log (rate constant) against reciprocal of the dielectric constant shows that differential effects of changes in solvent structure occur between the initial and the transition states and, as in the investigations using structure-enhancing cosolvents, the principal effect of change in solvent structure on the cobalt(II1) cation occurs on the penta-coordinated ion in the transition state. The kinetics of the solvolysis of the trans-[Coen2C121f cation (en = 1,2-diaminoethane) have been investigated in water + propan-2-01 [ll, water + t-butyl alcohol [2J, and water + ethanonitrile [31 over a range of temperatures and solvent compositions. Whereas the first two cosolvents considerably enhance the structure of water when added in small concentrations and ethanonitrile has much less of an effect, all three cosolvents reduce E41

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Author

Grahame S. Groves; Cecil F. Wells

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0538-8066)

Published

1986

Language

EN

Field

Chemistry (Physical Sciences)