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Bis[(4-methyl-phen-yl)ethyn-yl] telluride.

Ignez Caracelli, Julio Zukerman-Schpector, Jesus M Pena

Acta Crystallographica. Section E, Structure Reports Online

|May 18, 2011

Summary

This study details the crystal structure of bis-ethynyl telluride, C(18)H(14)Te. The tellurium atom and ring structures exhibit specific angles, with molecules forming chains via C-H⋯π interactions.

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Area of Science:

Organometallic Chemistry
Crystallography
Materials Science

Background:

Organotellurium compounds are of interest due to their unique electronic properties and potential applications.
Understanding the solid-state structure of tellurium-containing molecules is crucial for predicting their behavior and designing new materials.

Purpose of the Study:

To elucidate the crystal structure of bis-ethynyl telluride (C(18)H(14)Te).
To analyze the molecular geometry, including bond angles and dihedral angles.
To investigate intermolecular interactions within the crystal lattice.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the atomic arrangement.
Crystallographic data were analyzed to obtain precise bond lengths, angles, and intermolecular contacts.
Structural features were visualized and interpreted.

Main Results:

The tellurium atom in bis-ethynyl telluride lies on a crystallographic twofold axis.
The C-Te-C bond angle was determined to be 92.23(15)°.
A dihedral angle of 87.27(7)° was observed between the two ethynyl rings.
Molecules are arranged in chains along the b-axis, stabilized by C-H⋯π interactions.

Conclusions:

The crystal structure of bis-ethynyl telluride reveals a distorted geometry around the tellurium center.
Intermolecular C-H⋯π interactions play a significant role in organizing the molecular packing.
The findings provide fundamental insights into the solid-state behavior of organotellurium compounds.