A novel organotellurium halide with tellurium presenting mixed oxidation states: Synthesis and structural characterization

作者：Casagrande Gleison Antonio^*; Raminelli Cristiano; Lang Ernesto Schulz; Lemos Sebastiao de Souza

来源：Inorganica Chimica Acta, 2011, 365(1): 492-495.

DOI：10.1016/j.ica.2010.09.053

• Organotellurium halides
• Mixed oxidation state
• Secondary bonds

In this work we have investigated the reaction for the obtention of an uncommon complex salt of the organotellurium bromide class. The reaction was carried out without the isolation of the synthetic intermediates in one-pot procedure. The complex salt obtained presents the tellurium atoms with mixed oxidation states (Te-II and Te-IV). The cationic unit [5-Br-2-CH3O-C6H3Te(ETU)](+) presents the Te-II atom with a "T" shape coordination geometry, and the anionic unit [4-CH3O-C6H4TeBr4] presents the Te-IV atom with an octahedral coordination geometry considering the Te center dot center dot center dot Br interaction of 3.600(6) angstrom from the dimeric arrangement presented in the solid state. Intermolecular (Te center dot center dot center dot Br) secondary bonds, built up the crystalline/molecular structure. Solution NMR data are presented and discussed in the light of the X-ray structure.

• 出版日期2011-1-15