Abstract
The electrode kinetics for the reduction of bis(biphenyl)chromium(I) tetraphenylborate in N-methyl-2-pyrrolidinone and in N-methyl-2-thiopyrrolidinone with different concentrations of tetrabutylammonium perchlorate as supporting electrolyte were studied by cyclic voltammetry and by ac polarography. The apparent standard reaction rate constants varied between 0.01 and 0.93 cm s −1 depending on the solvent and the supporting electrolyte concentration. Conductivity measurements of bis(biphenyl)chromium(I) tetraphenylborate showed that this compound does not form ion-pairs in either of these two solvents.
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