Triphenyltelluronium Haloplumbates (II)

Abstract

The paper describes the synthesis and properties of Triphenyltelluronium haloplumbates (II). [(Ph₃Te)+]₂[PbCI₄]^2–, [Ph₃Te]+[PbBr₃]– and [Ph₃Te]+[PbI₃]– type products are obtained by reactions of Ph₃TeX with PbX₂ in presence of HX (X ═ Cl, Br, I respectively). Conductivity, molecular weight determinations and ¹H nmr data are consistent with their dissociation in dilute solution as Ph₃Te+ and PbCl₄^2– or Ph₃Te+ and PbBr₃^- or PbI₃^– units. The absence of Te–Pb and Te–X vibrations in the far i. r. spectra of these compounds also supports their formulation as ionic compounds.