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.