Air-stable aryl derivatives of pentafluoroorthotellurate.

We report on two different sets of air-stable derivatives of pentafluoroorthotellurate containing fluorinated and non-fluorinated aryl groups. The acid -PhTeFOH was obtained in gram scale and further transformed to Ag[-PhTeFO], which was used as a -PhTeFO transfer reagent to obtain [PPh][-PhTeFO]. Furthermore, the synthesis of -(CF)TeFOH was achieved by a selective hydrolysis of -(CF)TeF in the presence of KF and subsequent protonation by HF. Quantum-chemical calculations show a higher acidity and robustness against fluoride abstraction for -(CF)TeFOH compared to -PhTeFOH.