Ditellurium bromide

Ditellurium bromide
Identifiers
CAS Number	12514-37-3 ;
3D model (JSmol)	Interactive image;
PubChem CID	163195843;
CompTox Dashboard (EPA)	DTXSID801312131 ;
	InChI InChI=1S/Br.2Te Key: YFIRGYCOHWGSSA-UHFFFAOYSA-N;
	SMILES [Te].[Te].[Br];
Properties
Chemical formula	Te2Br
Molar mass	335.10 g·mol−1
Appearance	Gray crystalline solid
Melting point	224 °C[1]
Related compounds
Other anions	tritellurium dichloride
Other cations	selenium dibromide
Related compounds	tellurium tetrabromide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Ditellurium bromide is the inorganic compound with the formula Te₂Br. It is one of the few stable lower bromides of tellurium. Unlike sulfur and selenium, tellurium forms families of polymeric subhalides where the halide/chalcogen ratio is less than 2.[2]

Preparation and properties

Te₂Br is a gray solid. Its structure consists of a chain of Te atoms with Br occupying a doubly bridged site. It is prepared by heating tellurium with the appropriate stoichiometry of bromine near 215 °C. The corresponding chloride and iodide, Te₂Cl and Te₂I, are also known.[3]

Other tellurium bromides include the yellow liquid Te₂Br₂, the orange solid TeBr₄,[4] and the greenish-black solid TeBr₂.[5] Complexes of the type TeBr₂(thiourea)₂ are well characterized.[6]

References

Yaws, Carl (2015). The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals (2nd ed.). Gulf Professional Publishing. ISBN 978-0-12-800834-8.
Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
R. Kniep, D. Mootz, A. Rabenau "Zur Kenntnis der Subhalogenide des Tellurs" Zeitschrift für anorganische und allgemeine Chemie 1976, Volume 422, pages 17–38. doi:10.1002/zaac.19764220103
Zhengtao Xu "Recent Developments in Binary Halogen–Chalcogen Compounds, Polyanions and Polycations" in Handbook of Chalcogen Chemistry: New Perspectives in Sulfur, Selenium and Tellurium, Francesco Devillanova, Editor, 2006, RSC. pp. 381-416. Royal Society doi:10.1039/9781847557575-00455
Rogers, Max; Spurr, Robert (September 1947). "The Structure of Tellurium Dibromide". Journal of the American Chemical Society. 69 (9): 2102–2103. doi:10.1021/ja01201a007.
Foss, Olav; Maartmann-Moe, Knut (1987). "Complexes of Tellurium Dichloride, Dibromide and Diiodide with Thiourea and Tetramethylselenourea, TeL₂X₂. X-Ray Crystal Structures". Acta Chemica Scandinavica. 41a: 121–129. doi:10.3891/acta.chem.scand.41a-0121.

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[1] Yaws, Carl (2015). The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals (2nd ed.). Gulf Professional Publishing. ISBN 978-0-12-800834-8.

[2] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[3] R. Kniep, D. Mootz, A. Rabenau "Zur Kenntnis der Subhalogenide des Tellurs" Zeitschrift für anorganische und allgemeine Chemie 1976, Volume 422, pages 17–38. doi:10.1002/zaac.19764220103

[Xu-4] Zhengtao Xu "Recent Developments in Binary Halogen–Chalcogen Compounds, Polyanions and Polycations" in Handbook of Chalcogen Chemistry: New Perspectives in Sulfur, Selenium and Tellurium, Francesco Devillanova, Editor, 2006, RSC. pp. 381-416. Royal Society doi:10.1039/9781847557575-00455

[5] Rogers, Max; Spurr, Robert (September 1947). "The Structure of Tellurium Dibromide". Journal of the American Chemical Society. 69 (9): 2102–2103. doi:10.1021/ja01201a007.

[6] Foss, Olav; Maartmann-Moe, Knut (1987). "Complexes of Tellurium Dichloride, Dibromide and Diiodide with Thiourea and Tetramethylselenourea, TeL₂X₂. X-Ray Crystal Structures". Acta Chemica Scandinavica. 41a: 121–129. doi:10.3891/acta.chem.scand.41a-0121.