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

doi:https://doi.org/10.1107/S0108270197016387

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

Department of Geology

Research output: Contribution to journal › Article › Research › peer-review

14 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	995-1000
Journal	Acta Crystallographica Section C: Crystal Structure Communications
Volume	54
DOIs	https://doi.org/10.1107/S0108270197016387
Publication status	Published - 15 Jul 1998

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@article{01ac1e57a2c04e8487cd9c7dbd00fc9b,

title = "Two polymorphs of bis(4-methoxyphenyl)-tellurium(IV) diiodide",

abstract = "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) {\AA}, respectively. In both polymorphs, the molecules are associated via Te⋯I secondary bonds [3.6922 (6)-3.9017 (7) {\AA}] 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.",

author = "Joan Farran and Angel Alvarez-Larena and Capparelli, {Mario V.} and Piniella, {Joan F.} and Gabriel Germain and Libardo Torres-Castellanos",

year = "1998",

month = jul,

day = "15",

doi = "https://doi.org/10.1107/S0108270197016387",

language = "English",

volume = "54",

pages = "995--1000",

}

Two polymorphs of bis(4-methoxyphenyl)-tellurium(IV) diiodide. / Farran, Joan; Alvarez-Larena, Angel; Capparelli, Mario V.; Piniella, Joan F.; Germain, Gabriel; Torres-Castellanos, Libardo.

In: Acta Crystallographica Section C: Crystal Structure Communications, Vol. 54, 15.07.1998, p. 995-1000.

Research output: Contribution to journal › Article › Research › peer-review

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.

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