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Organotellurium(VI) Azides and Halides

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posted on 03.11.2004, 00:00 by Thomas M. Klapötke, Burkhard Krumm, Kurt Polborn, Ingo Schwab
The reaction of azide with organotellurium(VI) halides Ph5TeBr and cis-(biphen)2TeF2 (biphen = 2,2‘-biphenyldiyl) resulted in the formation and isolation of Ph5TeN3 (1) and cis-(biphen)2Te(N3)2 (2), which are the first tellurium(VI)-azide species. In addition to spectroscopic data, both crystal structures have been determined. Furthermore, the stability of possible Te(VI) species with higher azide contents PhxTe(N3)6-x and MexTe(N3)6-x as well as the syntheses and properties of their Ph/MexTeFy precursors was investigated, including the crystal structure determination of trans-Ph2TeF4 (3). Ab initio and density functional studies of all molecules regarding the structures and electronic populations were performed.