Ditellurium bromide

Ditellurium bromide
Identifiers
Properties
Te2Br
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).
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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 chalcogen/halide ratio is less than 2.[1]

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 Te with the appropriate stoichiometry of bromine near 215 °C. The corresponding chloride and iodide, Te2Cl and Te2I, are also known.[2]

The only other tellurium bromides are the yellow liquid Te2Br2 and the orange solid TeBr4.[3]

Tellurium dibromide

Although TeBr2 is not known, complexes of the type TeBr2(thiourea)2 are well characterized.[4]

References

  1. ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9.
  2. ↑ 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
  3. ↑ 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
  4. ↑ 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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