Electrochemical generation of hydridopentamminerhodium(III) and its reaction with molecular oxygen
- 15 November 1969
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 47 (22) , 4241-4246
- https://doi.org/10.1139/v69-700
Abstract
The electrochemistry of Rh(NH3)5OH2+ has been studied in a buffered ammoniacal solution. The polarographic reduction wave at the dropping mercury electrode had E1/20 equal to −1.10 V (vs. saturated calomel electrode) in a 0.10 M NH3 – 0.10 M NH4ClO4 electrolyte, and gross Hg cathode electrolysis at −1.19 V produced a stable Rh(NH3)5H2+ hydride species. Both reductions were found to take place through a Rh(I) intermediate.The reaction of the Rh(NH3)5H2+ with molecular O2 in the ammoniacal electrolyte was also studied. The product was demonstrated to be a stable Rh(NH3)4(OH)(O2H)+ hydroperoxo species.Keywords
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