Synthesis and Characterization of (2,3-Dimethyl-4-hydroxyphenyl)tellurium(IV) Halides

Abstract

This paper reports the preparation and properties of (2,3- dimethyl-4-hydroxyphenyl)tellurium(IV)-halides, R_nTeX_4–n (where X = Cl^–, Br ^–, I^– and n = 1,2). Conductance and cryoscopic measurements reveal the molecular nature of RTeCl₃ and R₂ TeX₂ and 1 : 1 electrolyte-type nature of RTeBr₃ and RTeI₃ in nitrobenzene, nitromethane and acetonitrile. The ¹H NMR and IR spectra suggest that the halotellurium groups are in para position to the —OH group. The far IR spectra reflect the polymeric nature of RTeX₃ and monomeric nature having a Ψ-trigonal bipyramidal structure of R₂TeX₂ type compounds.