Tritellurium dichloride

Tritellurium dichloride
Identifiers
CAS Number	12526-08-8 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/Cl2Te3/c1-5(2)4-3 Key: TWWCHESXRMILGP-UHFFFAOYSA-N;
	SMILES Cl[Te](=[Te])(=[Te])Cl;
Properties
Chemical formula	Te3Cl2
Molar mass	453.71 g/mol
Appearance	Gray solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Structure of trans-[TeCl₂(SC(NMe₂)₂)₂] (H atoms omitted).^[1]

Tritellurium dichloride is the inorganic compound with the formula Te₃Cl₂. 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 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 Te with the appropriate stoichiometry of chlorine.^[4]

References

^ 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.
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
^ 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.
^ Kniep, R.; Mootz, D.; Rabenau, A. (1976). "Zur Kenntnis der Subhalogenide des Tellurs". Zeitschrift für anorganische und allgemeine Chemie. 422: 17–38. doi:10.1002/zaac.19764220103.

[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.

[Xu-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: 17–38. doi:10.1002/zaac.19764220103.

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