Voltammetry of organic ditellurides in protic media. mercury assisted chemical pre-reactions with catalytic effects
✍ Scribed by B. Nygård; Jiri Ludvik; S. Wendsjö
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 497 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The different reduction mechanisms of two types of organic ditellurides have been studied in aqueous/ethanolic media by voltammetry of interest for a mercury assisted chemical pre-reaction as a first step in the electrode process. Bis carboxymethyl ditelluride, HOOC-CH,-TeTe-CH,-COOH (I) and diphenyl ditelluride Ph-TeTe-Ph (II) were model compounds. During the reduction of (I) on the mercury electrode a strong catalytic evolution of free tellurium (Te') is observed indicating a Te-C bond cleavage. Contrary to this, the reduction of diphenyl ditelluride proceeds as a mercury assisted cleavage of the Te-Te bond. The reduction pattern for the aromatic ditelluride is compared with the corresponding aromatic selenium and sulphur analogues.