Novel Superacids: Formation of Pentafluoro-orthotellurate Derivatives of Aluminium

Anja Wiesner, Thomas W. Gries, Simon Steinhauer, Helmut Beckers and Sebastian Riedel – 2017

The new Lewis acid Al(OTeF₅)₃ and its acetonitrile adduct CH₃CN→Al(OTeF₅)₃ were obtained by a simple one‐step synthesis in batches of up to 15 g. Al(OTeF₅)₃ and the adduct were characterized by vibrational spectroscopy (IR, Raman) and quantum‐chemical calculations. Furthermore, five different salts of the new weakly coordinating anion [Al(OTeF₅)₄]⁻ were prepared in a two‐step procedure. [Ph₄P][Al(OTeF₅)₄], Cs[Al(OTeF₅)₄], [Ph₃C][Al(OTeF₅)₄], as well as the protonated benzene derivatives [C₉H₁₃][Al(OTeF₅)₄] and [C₆H₇][Al(OTeF₅)₄] were characterized by low‐temperature single‐crystal X‐ray diffraction and NMR spectroscopy. Arenium salts have rarely been characterized in the solid state and were synthesized in this work in a simplified fashion.

Titel
Novel Superacids: Formation of Pentafluoro-orthotellurate Derivatives of Aluminium
Verfasser
Anja Wiesner, Thomas W. Gries, Simon Steinhauer, Helmut Beckers and Sebastian Riedel
Schlagwörter
Superacids, Lewis Acids, Bronsted Acids, Weakly Coordinating Anions, Carbocations
Datum
2017
Erschienen in
Angew. Chem. Int. Ed. 2017, 56, 8263-8266.
Zitierweise
DOI: 10.1002/anie.201702807 (Int. Ed.); 10.1002/ange.201702807
Sprache
eng