Polymeric polyiodo-chlorotellurates(iv): new supramolecular hybrids in halometalate chemistry

Abstract

Reaction between TeO₂ and I₂ in HCl afforded a series of supramolecular hybrids Cat₂{[TeCl₆](I₂)} (1–5) where diiodine fragments are linked to [TeCl₆]²⁻ octahedra via halogen bonds (XB). The compounds were characterized using X-ray diffraction, revealing one- and two-dimensional anionic motifs built via I⋯Cl supramolecular interactions. Features of non-covalent interactions were studied via quantum chemistry methods and Raman spectroscopy. Compounds 1–3 showed relatively narrow band gaps of 1.50–1.59 eV.