Journal article
Voltammetric investigation of the kinetics of alkali metal cation reduction in N,N-dimethylformamide
Australian Journal of Chemistry, Vol.28(2), pp.237-241
1975
Abstract
The standard electron-transfer heterogeneous rate constant of lithium, potassium, sodium and caesium amalgams in N,N-dimethylformamide was ascertained employing cyclic voltammetry in an effort to relate the presence of a non-equilibrium electrode reaction at the dropping lithium amalgam electrode to the variation of the lithium amalgam electrode potential with amalgam electrode con- figuration, i.e. whether streaming, dropping or stationary. Such variations are not observed at other alkali metal amalgam electrodes. In the dipolar aprotic solvents the standard electron-transfer heterogeneous rate constant for the Li(Hg) electrode increases as the solvating power for Li+ decreases, i.e. dimethyl sulphoxide < di- methylformamide < propylene carbonate. Water is a much stronger solvator of Li+ than is propylene carbonate, but the electron transfer is faster in water than in propylene carbonate; the important role of entropic contributions in ion solvation is discussed as an explanation.
Details
- Title
- Voltammetric investigation of the kinetics of alkali metal cation reduction in N,N-dimethylformamide
- Authors/Creators
- J.W. Diggle (Author/Creator)A.J. Parker (Author/Creator)D.A. Owensby (Author/Creator)
- Publication Details
- Australian Journal of Chemistry, Vol.28(2), pp.237-241
- Publisher
- Commonwealth Scientific and Industrial Research Organization Publishing
- Identifiers
- 991005546334207891
- Copyright
- © 1975 CSIRO
- Murdoch Affiliation
- School of Mathematical and Physical Sciences
- Language
- English
- Resource Type
- Journal article
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