Syntheses and molecular structures of organo-tellurium(IV) halides trans-[(Ph₂Te)(μ-Cl)₂]_n, cis-[(Ph₂Te)(μ-Cl)₂]_n, [(p-MeC₆H₄)₂TeBr₂], and [{(p-MeC₆H₄)₂TeBr}₂(μ-O)]

Abstract

Treatment of Ph₂Te with aqueous hydrogen chloride under air in refluxing THF gave trans-[(Ph₂Te)(μ-Cl)₂]_n (1), whereas interaction of Ph₂Te with ammonium chloride under similar condition afforded cis-[(Ph₂Te)(μ-Cl)₂]_n (2). Reaction of (p-MeC₆H₄)₂Te and bromine in refluxing THF resulted in formation of a discrete complex [(p-MeC₆H₄)₂TeBr₂] (3) with a step-like tetrameric structure, which further reacted with sodium hydroxide in refluxing THF to give a dinuclear tellurium oxide [{(p-Me-C₆H₄)₂TeBr}₂(μ-O)] (4) with a bridging oxygen atom. Complexes 1–4 have been spectroscopically characterized and their crystal structures have been established by X-ray crystallography.

Keywords:

• Tellurium
• halide
• organotellurium
• synthesis
• crystal structure

Acknowledgements

We thank reviewers and co-editor for their helpful suggestions during revision of this paper.