Synthesis of New Perfluorinated Telluracarbonyls and 1,3-Ditelluretanes

Abstract:

With the preparation of C₂F₅(F)C=Te, the third, non-resonance stabilished perfluorinated telluracarbonyl has been isolated and characterised by mass spectrometry. It was prepared via phyrolysis of the novel compound Me₃SnTe(n-C₃F₇) at 550 °C, 10⁻³ Torr in 45% yield. The compound C₂F₅(F)C=Te is only stable at -196 °C and dimerises quantitatively a few degrees above this temperature to the corresponding mixture of cis/trans-2,4-bis(pentafluoroethyl)-2,4-difluoro-1,3-ditelluretane.

Keywords::

• Telluracarbonys
• 1,3-Ditelluretanes
• Bis(perfluoroalkyl)ditellurides
• / Trimethylstannylperfluoro-alkyltellurides