Tritellurium dichloride

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Tritellurium dichloride
Tritellurium dichloride.png
Identifiers
3D model (JSmol)
  • InChI=1S/Cl2Te3/c1-5(2)4-3
    Key: TWWCHESXRMILGP-UHFFFAOYSA-N
  • Cl[Te](=[Te])(=[Te])Cl
Properties
Te3Cl2
Molar mass 453.71 g/mol
AppearanceGray solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Structure of trans-[TeCl2(SC(NMe2)2)2] (H atoms omitted). ZZZEJK01.png
Structure of trans-[TeCl2(SC(NMe2)2)2] (H atoms omitted).

Tritellurium dichloride is the inorganic compound with the formula Te 3 Cl2. It is one of the more stable lower chlorides of tellurium.

Preparation and properties

Te3Cl2 is a gray solid. Its structure consists of a long chain of tellurium (Te) atoms, with every third Te center carrying two chloride ligands for the repeat unit -Te-Te-TeCl2-. [2] It is a semiconductor with a band gap of 1.52 eV, which is larger than that for elemental Te (0.34 eV). [3] It is prepared by heating tellurium with the appropriate stoichiometry of chlorine. [4]

References

  1. ↑ Foss, O.; Maartmann-Moe, K. (1986). "Crystal and Molecular Structures of trans Square–Planar Complexes of Tellurium Dichloride, Dibromide and Diiodide with Tetramethylthiourea, TeL2X2. Bond Lengths in Centrosymmetric Tellurium(II) Complexes". Acta Chemica Scandinavica A. 40: 675. doi: 10.3891/acta.chem.scand.40a-0675 .
  2. ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN   978-0-08-037941-8.
  3. ↑ Xu, Zhengtao (2006). "Recent Developments in Binary Halogen–Chalcogen Compounds, Polyanions and Polycations". In Devillanova, Francesco (ed.). Handbook of Chalcogen Chemistry: New Perspectives in Sulfur, Selenium and Tellurium. Royal Society of Chemistry. pp. 381–416. doi:10.1039/9781847557575-00455.
  4. ↑ Kniep, R.; Mootz, D.; Rabenau, A. (1976). "Zur Kenntnis der Subhalogenide des Tellurs". Zeitschrift für anorganische und allgemeine Chemie. 422 (1): 17–38. Bibcode:1976ZAACh.422...17K. doi:10.1002/zaac.19764220103.
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