TY - JOUR
T1 - Two polymorphs of bis(4-methoxyphenyl)-tellurium(IV) diiodide
AU - Farran, Joan
AU - Alvarez-Larena, Angel
AU - Capparelli, Mario V.
AU - Piniella, Joan F.
AU - Germain, Gabriel
AU - Torres-Castellanos, Libardo
PY - 1998/7/15
Y1 - 1998/7/15
N2 - 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.
AB - 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.
U2 - https://doi.org/10.1107/S0108270197016387
DO - https://doi.org/10.1107/S0108270197016387
M3 - Article
VL - 54
SP - 995
EP - 1000
ER -