Synthesis and structure of diarylhalotelluronium hexahalotellurates [(8-Me2 NC10 H6)2 TeX]2 TeX6 (X=Cl, Br)

Abstract

The title compounds [(8-Me2 NC10 H6)2 TeX]2 TeX6 (1, X=Cl; 2, X=Br) were obtained by the oxidation of (8-Me2 NC10 H6)2 Te with SO2 Cl2 and Br2 and the subsequent addition of TeCl4 and TeBr4, respectively, and were characterized by X-ray crystallography and multinuclear NMR spectroscopy. Due to the intramolecularly coordinating 8-dimethylaminonaphthyl substituents, 1 and 2 comprise loosely associated ion pairs of distorted trigonal bipyramidal [(8-Me2 NC10 H6)2 TeX]+ cations and octahedral TeX62-${\rm{TeX}}_{\rm{6}}^{{\rm{2 - }}}$ anions (X=Cl, Br).

Keywords

• 125te nmr spectroscopy
• secondary bonds
• structure determination
• tellurium