Effects of cations on electrode processes of Cobalt–Schiff base complexes and their organometallic derivatives
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 521-525
- https://doi.org/10.1039/dt9760000521
Abstract
In the dipolar aprotic solvent NN-dimethylformamide, the anionic species [CoIL]– and [CoIIL(R)]–, electrochemically generated from the corresponding cobalt(II) and cobalt(III) derivatives, interact strongly with counter cation forming contact ion pairs [L =NN′-o-phenylenebis(salicylideneiminato), NN′-ethylenebis(salicylideneiminato), NN′-ethylenebis(α,α′-dimethylsalicylideneiminato), and NN′-ethylenebis(acetylacetonediiminato)]. There is a linear relation between the reversible E½(red) values and the ionic potential of the counter cations. Association constants for the complexes (ion pairs) thus formed have been evaluated by polarography. Destabilization effects of the counter cations on the cobalt–carbon bond in the organometallic derivatives have been detected by cyclic voltammetry.Keywords
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