A polyfluoroaromatic tellurium–nitrogen compound: synthesis and properties of 4,5,6,7-tetrafluoro-2λ4δ2,1,3-benzotelluradiazole

4,5,6,7-Tetrafluoro-2λ4δ2,1,3-benzotelluradiazole compound 2 (and a 15N-enriched sample) is synthesized by treating TeCl4 with the corresponding diamine 4 in the absence of HCl acceptors. Some of its properties, .e.g. high volatility, facile hydrolysis and vibrational frequencies, are experimentally determined.