Halogenation reactions of a ditelluride having bulky aryl groups leading to the formation of organotellurium halides

Abstract

Halogenation reactions of BbtTe-TeBbt (Bbt; 2,6-bis[bis(trimethylsilyl) methyl]-4-[tris (trimethylsilyl)methyl]phenyl) with SO2Cl 2, Br2, and I2 were examined. When 1 equiv of the reagents were used, the corresponding tellurium monohalides were obtained as stable crystalline compounds. Although iodination reaction of BbtTe-TeBbt using 3 equiv of I2 afforded BbtTeI, treatment of BbtTe-TeBbt with 3 equiv of SO2Cl2 and Br2 gave the corresponding tellurium trihalides, BbtTeX3(X = Cl, Br), as stable crystalline compounds. Characterization of the obtained tellurium mono- and trihalides was achieved by the spectroscopic and crystallographic analyses, together with theoretical calculations. © 2011 Wiley Periodicals, Inc.