Selenium dibromide

Selenium dibromide
Names
IUPAC name
Bromo selenohypobromite
Systematic IUPAC name
Selenium dibromide
Identifiers
3D model (JSmol)
UNII
  • InChI=1S/Br2Se/c1-3-2
  • [Se](Br)Br
Properties
Br2Se
Molar mass 238.779 g·mol−1
Related compounds
Other anions
 Selenium dichloride, SeCl2
Other cations
 Sulfur dibromide, SBr2
Related compounds
 Selenium tetrabromide, SeBr4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Selenium dibromide is a compound made of one selenium and two bromine atoms. It is unstable. No solid form of the compound has been discovered but it is a component of the equilibria in the vapour above selenium tetrabromide (SeBr4) and in nonaqueous solutions.[1] In acetonitrile solution, selenium reacts with SeBr4 to form an equilibrium mixture containing SeBr2, Se2Br2 and Br2.[2] This covalent compound has a bent molecular geometry in the gas phase.[3]

References

  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 768, 771–772. ISBN 978-0-08-037941-8.
  2. ^ Steudel, Ralf; Jensen, Detlef; Baumgart, Frank (1990). "77Se-NMR and raman spectroscopic characterization of selenium dibromide (SeBr2) and its reaction with titanocene pentasulphide to give cyclic selenium sulphides of ring size 6, 7, 8, and 12". Polyhedron. 9 (9): 1199–1208. doi:10.1016/S0277-5387(00)86896-5.
  3. ^ Shlykov, Sergey A.; Titov, Anton V.; Oberhammer, Heinz; Giricheva, Nina I.; Girichev, Georgiy V. (2008). "The molecular structure of selenium dibromide as determined by combined gas-phase electron diffraction–mass spectrometric experiments and quantum chemical calculations". Phys. Chem. Chem. Phys. 10 (42): 6438–6445. Bibcode:2008PCCP...10.6438S. doi:10.1039/B808071B. PMID 18972032.

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