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Caesium tribromide

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Not to be confused with Cerium tribromide.

Caesium tribromide
Identifiers
CAS Number
Properties
Chemical formula CsBr3
Molar mass 372.617 g·mol
Appearance
  • Orange solid
  • Dark red crystals
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Caesium tribromide is an inorganic compound with the chemical formula CsBr3.

It can be obtained by crystallization from a concentrated aqueous solution of caesium bromide containing large amounts of bromine, or by the hydrothermal reaction of caesium bromide, caesium bromate, and hydrobromic acid, in which bromine is generated in situ.

It is isostructural with caesium triiodide and caesium diiodide bromide, and belongs to the orthorhombic Pmnb space group.

It decomposes at 38 °C.

It can oxidize some Au(I) complexes to Au(II) or Au(III) complexes.

References

  1. ^ Kriechbaum, Margit; Otte, Daniela; List, Manuela; Monkowius, Uwe (17 April 2014). "Facile oxidation of NHC-Au(I) to NHC-Au(III) complexes by CsBr3". Dalton Trans. 43 (23): 8781–8791. doi:10.1039/C4DT00695J. ISSN 1477-9226.
  2. ^ Lin, Yang-Peng; Huang, Xiao-Ying; Du, Ke-Zhao (March 2022). "Br2-free method for XBr3 (X = Cs, C8H20N, C16H36N) synthesis: Br2 solid storage and separation from aqueous solution". Materials Chemistry and Physics. 280. doi:10.1016/j.matchemphys.2022.125820.
  3. ^ Breneman, G. L.; Willett, R. D. (1 June 1969). "The crystal structure of caesium tribromide and a comparison of the Br−3 and I−3 systems". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 25 (6): 1073–1076. doi:10.1107/S0567740869003554. ISSN 0567-7408.
  4. Harris, G.S.; McKechnie, J.S. (January 1982). "Thermogravimetric analysis and dissociation pressure of caesium trihalides". Polyhedron. 1 (2): 215–216. doi:10.1016/S0277-5387(00)80991-2.
  5. Lane, Andrew; Barnes, Charles; Vollmer, Matthew; Walensky, Justin (8 October 2014). "Reactivity of Mononuclear and Dinuclear Gold(I) Amidinate Complexes with CS2 and CsBr3". Inorganics. 2 (4): 540–551. doi:10.3390/inorganics2040540. ISSN 2304-6740.

Further reading

  • Morss, Lester R. (August 1975). "Some thermodynamic properties of cesium tribromide and tetraethylammonium trichloride". The Journal of Chemical Thermodynamics. 7 (8): 709–717. doi:10.1016/0021-9614(75)90245-1.
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