Two Polymorphs of Bis(4-methoxyphenyl)tellurium(IV) Diiodide
Farran José, Joan (Universitat Autònoma de Barcelona. Departament de Geologia)
Alvarez-Larena, Angel (Universitat Autònoma de Barcelona. Departament de Geologia)
Piniella, J. Francesc (Joan Francesc) (Universitat Autònoma de Barcelona. Departament de Geologia)
Capparelli, Mario V. (Universitat Autònoma de Barcelona. Departament de Geologia)
Germain, Gabriel (Université de Louvain. Unité de Chimie Physique Moléculaire et de Cristallographie)
Torres-Castellanos, Libardo (Universidad Nacional de Colombia. Departamento de Química)

Date:	1998
Abstract:	The title compound, (C7H7O)2Tel2 (orC14H14I2O2Te), crystallizes in space group P1, either with Z = 8, (Ia), or Z = 4, (Ib). The six independent molecules [four in (Ia) and tow 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 equatiorial 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) A, respectively. In both polymorphs, the molecules are associated via Te. . . I secondary bonds [3. 6922(6)-3. 9017(7)A] 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.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; Versió publicada
Subject:	Cristal·lografia ; Crystallography
Published in:	Acta Crystallographica. Section C: Crystal Structure Communications, Vol. 54, Issue 7 (July 1998) , p. 995-1000, ISSN 1600-5759

DOI: 10.1107/S0108270197016387

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