Two polymorphs of bis(4-methoxyphenyl)-tellurium(IV) diiodide

Joan Farran, Angel Alvarez-Larena, Mario V. Capparelli, Joan F. Piniella, Gabriel Germain, Libardo Torres-Castellanos

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)


The title compound, (C7H7O)2TeI2 (or C14H14I2O2Te), crystallizes in space group P1, either with Z = 8, (Ia), or Z = 4, (Ib). The six independent molecules [four in (Ia) and two in (Ib)] have very similar structures. The geometry at the Te atoms is pseudo-trigonal bipyramidal, with the I atoms in the axial positions and the anisyl groups and the lone pair of electrons in the equatorial plane. The Te-C and Te-I distances are in the ranges 2.107 (4)-2.128 (6) and 2.8549 (10)-3.0071 (10) Å, respectively. In both polymorphs, the molecules are associated via Te⋯I secondary bonds [3.6922 (6)-3.9017 (7) Å] to form centro-symmetric tetramers in which the Te4I8 cores display step-like geometries. Including the secondary interactions, the coordination about each Te atom is distorted octahedral.
Original languageEnglish
Pages (from-to)995-1000
JournalActa Crystallographica Section C: Crystal Structure Communications
Publication statusPublished - 15 Jul 1998


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