Bismuth bromide

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Bismuth bromide
Other names Bismuth(III) bromide
Bismuth tribromide
Identifiers
InChI InChI=1/Bi.3BrH/h;3*1H/q+3;;;/p-3
InChIKey TXKAQZRUJUNDHI-DFZHHIFOAX
Standard InChI InChI=1S/Bi.3BrH/h;3*1H/q+3;;;/p-3
Standard InChIKey TXKAQZRUJUNDHI-UHFFFAOYSA-K
CAS number [7787-58-8]
EC number 232-121-1
ChemSpider 74210
Properties[1]
Chemical formula BiBr3
Molar mass 448.69 g mol−1
Appearance off-white solid
Density 5.72 g cm−3
Melting point

218 °C

Boiling point

453 °C

Solubility in water hydrolyzes
Thermochemistry[2]
Std enthalpy of formation ΔfHo298 −276 kJ mol−1
Related compounds
Other anions Bismuth(III) fluoride
Bismuth chloride
Bismuth iodide
Other cations Nitrogen tribromide
Phosphorus tribromide
Arsenic tribromide
Antimony tribromide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Bismuth bromide, BiBr3, is the only well-characterized bromide of bismuth. It is formed by direct reaction of the elements.[3] The gas phase molecule is pyramidal, with r(Bi–Br) = 256.7(5) pm and θ(Br–Bi–Br) = 98.6(2)°.[4] It is dimorphic in the solid state, with the α-phase retaining pyramidal BiBr3 units (mean r(Bi–Br) = 266.3 pm) while the β-phase shows octahedral coordination for the bismuth (mean r(Bi–Br) = 281 pm).[5] It has a number of specialist uses.[6]

Notes and references

Notes

References

  1. CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-82. ISBN 0-8493-0462-8.
  2. Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; pp 651–55. ISBN 0-08-022057-6.
  3. Cotton, F. Albert; Wilkinson, Geoffrey Advanced Inorganic Chemistry, 5th ed.; Wiley-Interscience: New York, 1988; pp 391–93. ISBN 0-471-84997-9.
  4. Schultz, György; Kolonits, Mária; Hargittai, Magdolna Molecular Structure of BiBr3: An Electron Diffraction Study. Struct. Chem. 1999, 10 (4), 321–25. DOI: 10.1023/A:1022130620414.
  5. Fisher, George A.; Norman, Nicholas C. The Structures of the Group 15 Element(III) Halides and Halogenoanions. Adv. Inorg. Chem. 1994, 41, 233–71. DOI: 10.1016/S0898-8838(08)60173-7.
  6. Ukeles, S. D.; Freiberg, M. Bromine, Inorganic Compounds. In Kirk-Othmer Encyclopedia of Chemical Technology; John Wiley: New York, 2002. DOI: 10.1002/0471238961.021815131001031.

Further reading

External links

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