Synthesis of organyltellanyl(IV) trihalides [2-(Me2NCH2)C6H4TeX3] (X = Cl, Br, I) and their rare zwitterionic derivatives containing organyltellanyl(II) groups

In this article we describe the synthesis and structural characterization of a series of organyltellanyl(IV) trihalides containing the [2-((dimethylamino)methyl)phenyl] moiety [2-(Me2NCH2)C6H4TeX3] (X = Cl, Br, I), and some of its derivatives in the form of rare zwitterionic compounds with organyltellanyl(II) groups. The supramolecular structure of the different organyltellanyl halides presents considerable changes due to the nature of Te center dot center dot center dot X and X center dot center dot center dot X secondary interactions. The positive and negative charges of the zwitterionic compounds, the size of the halogens and the repulsion of the lone electron pairs around the tellurium atom were also evaluated. All compounds were characterized by single crystal X-ray diffraction, vibrational spectroscopy (FT-IR and Raman) and NMR (H-1 and Te-125) spectroscopy and elemental analysis. (C) 2017 Elsevier B.V. All rights reserved.