Open AccessTwo Polymorphs of Bis(4‐methoxyphenyl)tellurium(IV) Diiodide
Author(s) -
Farran J.,
AlvarezLarena A.,
Capparelli M. V.,
Piniella J. F.,
Germain G.,
TorresCastellanos L.
Publication year - 1998
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270197016387
Subject(s) - lone pair , octahedron , crystallography , trigonal bipyramidal molecular geometry , tellurium , group (periodic table) , molecule , chemistry , atom (system on chip) , bipyramid , coordination geometry , stereochemistry , crystal structure , hydrogen bond , inorganic chemistry , organic chemistry , computer science , embedded system
The title compound, (C7H7O)(2)TeI2 (or C14H14I2O2Te), crystallizes in space group P (1) over bar, 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) Angstrom, respectively. In both poly morphs, the molecules are associated via Te I secondary bonds [3.6922(6)-3.9017 (7) Angstrom] to form centrosymmetric tetramers in which the Te4I8 cores display step-like geometries. Including the secondary interactions, the coordination about each Te atom is distorted octahedral
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