Novel Tellurium Halides

Tellurium reacts with SO2Cl2 in THF producing [HOC4H8][TeCl5(OC4H8)] (1a). In CS2 [H3O][Te3Cl13],·SO2 (2) is formed. When Me3SiBr or Me2SO is added to the reaction solution of 1a, [HOC4H8][TeBr5(OC4H8)] (1b) and [(Me2SO)2H]2[TeCl6] (3) are obtained, respectively. The reaction between metallic nickel, tellurium, and SO2Cl2 in acetonitrile produces [Ni(CH3CN)6][Te2Cl10] (4). All products are characterized by 125Te NMR spectroscopy and X-ray crystallography.