Selenium dibromide

Selenium dibromide
Names

IUPAC name Bromo selenohypobromite
Systematic IUPAC name Selenium dibromide
Identifiers
CAS Number	22987-45-7^Y
3D model (JSmol)	Interactive image
PubChem CID	140977
UNII	6WRB0BWV8E^Y
CompTox Dashboard (EPA)	DTXSID30177532
InChI InChI=1S/Br2Se/c1-3-2
SMILES [Se](Br)Br
Properties
Chemical formula	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). Infobox references

Chemical compound

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

^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 768, 771–772. ISBN 978-0-08-037941-8.
^ 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.
^ 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.