New insights into the structures of diorganotellurium Oxides. The first polymeric diorganotelluroxane[(p-MeOC6H4)2TEO]n
journal contribution
posted on 2003-07-04, 00:00authored byJ Beckmann, Dainis Dakternieks, Andrew DuthieAndrew Duthie, F Ribot, M Schurmann, Naomi Anne Lewcenko
The characterization of the previously reported diorganotellurium oxides R<sub>2</sub>TeO (R = Ph (<b>1</b>) and <i>p</i>-MeOC<sub>6</sub>H<sub>4</sub> (<b>2</b>)) was revisited by osmometric molecular weight determinations, <sup>125</sup>Te NMR spectroscopy, and electrospray spectrometry (ESMS) in solution and by 125Te MAS NMR spectroscopy in the solid state. The single-crystal X-ray structure of <b>2</b> revealed a polymeric arrangement that features a zigzag configured Te-O backbone without any secondary Te···O interactions. In solution <b>1 </b>and <b>2</b> exist predominantly as monomers but appear to be in equilibrium with higher oligomers to a minor extent. <br>