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Diphenyl ditelluride

Diphenylditelluride C2 symmetry Ph2Se2

Diphenylditelluride is the chemical compound with the formula (C6H5Te)2, abbreviated Ph2Te2. This orange-coloured solid is the oxidized derivative of the unstable benzenetellurol, PhTeH. Ph2Te2 is used as a source of the PhTe unit in organic synthesis and as a catalyst for redox reactions. The compound is a strong nucleophile, easily displacing halides. It also adds electrophilically across multiple bonds, and traps radicals.

Preparation

Ph2Te2 is prepared by the oxidation of tellurophenolate, which is generated via the Grignard reagent: :PhMgBr + Te → PhTeMgBr :2PhTeMgBr + 0.5 O2 + H2O → Ph2Te2 + 2 MgBr(OH)

The molecule has C2 symmetry.

References

References

  1. "Diphenyl ditelluride".
  2. (2015). "Copper Nanoparticles Catalyzed Se(Te)-Se(Te) Bond Activation: A Straightforward Route Towards Unsymmetrical Organochalcogenides from Boronic Acids". ChemCatChem.
  3. (2014). "Rate Accelerations of Bromination Reactions with NaBr and H2O2 via the Addition of Catalytic Quantities of Diaryl Ditellurides". Organometallics.
  4. {{cite encyclopedia
  5. Crich, D.; Yao, Q. "Diphenyl Ditelluride" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. {{doi. 10.1002/047084289X.rd416.
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