Fluorinated tellurium(IV) azides and their precursors |
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| Authors: | Thomas M Klapötke Burkhard Krumm Dieter Naumann |
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| Institution: | a Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13(D), D-81377 Munich, Germany
b Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany |
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| Abstract: | The perfluoroaryl tellurolates C6F5TeLi (1) and 4-CF3C6F4TeLi (2) were prepared. These intermediates were identified by NMR spectroscopy and may form, depending on the reaction conditions, either the corresponding ditellanes C6F5TeTeC6F5 (3) and CF3C6F4TeTeC6F4CF3 (4) by subsequent oxidation, or in the case of 1, a telluranthrene (C6F4Te)2 (5) by reaction with itself. The halogenation products of 5, ( C6F4Te)2F4 (6), (C6F4Te)2Cl4 (7), (C6F4Te)2Br4 (8), as well as the azidation product (C6F4Te)2(N3)4 (9) were synthesized. Furthermore, in pursuit of our recent work on tellurium azides, the syntheses and properties of R2Te(N3)2 (R=CF3 (10), C6F2H3 (11)) and RTe(N3)3 (R=CF3 (12) and C6F5 (13)) are reported. The crystal structures of CF3C6F4TeTeC6F4CF3 (4), (C6F4Te)2Br4 (8), and (C6F2H3)2Te(N3)2 (11) were determined. |
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| Keywords: | Ditellanes Tellurium azides Tellurolates X-ray crystallography |
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