Osmium tetrabromide
Names
Other names
osmium(IV) bromide
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/4BrH.Os/h4*1H;/q;;;;+4/p-4
    Key: MPVSPHKBQDMOHE-UHFFFAOYSA-J
  • [Br-].[Br-].[Br-].[Br-].[Os+4]
Properties
OsBr4
Molar mass 509.85 g·mol−1
Appearance black solid
Density 5.95 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Osmium tetrabromide is the inorganic compound with the formula OsBr4. A black solid, this compound can be produced by heating osmium tetrachloride and bromine under pressure.

Structure

As determined by X-ray crystallography, osmium tetrabromide is an inorganic polymer. It is isomorphous with platinum tetrabromide and technetium tetrachloride. As such, osmium is in octahedral coordination. Each osmium center bonds to four doubly bridging bromide ligands and two mutually cis terminal bromide ligands.[1]

Related compounds

OsBr3 is the only other binary osmium bromide is that has been crystallized.[2]

References

  1. ^ Thiele, G.; Wochner, H.; Wagner, H. (1985). "Über Osmiumbromide". Zeitschrift für Anorganische und Allgemeine Chemie. 530 (11): 178–186. doi:10.1002/zaac.19855301121.
  2. ^ Köhler, J. (2014). "Halides: Solid-State Chemistry". Encyclopedia of Inorganic and Bioinorganic Chemistry. pp. 1–22. doi:10.1002/9781119951438.eibc0078.pub2. ISBN 9781119951438.
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