Osmium tetrabromide

Names
Other names

osmium(IV) bromide

Identifiers

CAS Number

* 59201-52-4 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 21494153

PubChem CID

* 101978335

InChI

* InChI=1S/4BrH.Os/h4*1H;/q;;;;+4/p-4

Key: MPVSPHKBQDMOHE-UHFFFAOYSA-J

SMILES

* [Br-].[Br-].[Br-].[Br-].[Os+4]

Properties

Chemical formula

| 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).

Infobox references

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.

* v
* t
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Osmium compounds

Os(0)|

* Os3(CO)12

Os(0,I)|

* H2Os3(CO)10

Os(I)|

* OsB

Os(I,II)|

* Os2B3

Os(II)|

* OsB2

| Organoosmium(II) compounds|

* Os(C5H5)2

|

Os(IV)|

* OsO2
* OsCl4

Os(VI)|

* OsF6

Os(VIII)|

* OsO4
* OsS4

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