Chemistry:Osmium(V) chloride

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Osmium(V) chloride
ReCl5structure.png
Names
Other names
pentachloroosmium, osmium pentachloride
Identifiers
3D model (JSmol)
ChemSpider
Properties
Cl5Os
Molar mass 367.48 g·mol−1
Appearance black solid
Density 4.09
Melting point 160 °C (320 °F; 433 K)
soluble
Structure
P21/c[1]
a = 9.17 Å, b = 11.5 Å, c = 11.97 Å
α = 90°, β = 109°°, γ = 90°.[2]
1194 Å3
8
Related compounds
Related compounds
Osmium pentafluoride; Rhenium pentachloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Osmium(V) chloride is an inorganic chemical compound of osmium metal and chlorine with the chemical formula OsCl
5
.[3][4]

Potential synthesis

Osmium(V) chloride can be obtained in small amounts by reacting osmium hexafluoride with excess boron trichloride:[5]

2OsF
6
+ 4BCl
3
→ 2OsCl
5
+ 4BF
3
+ Cl
2

It can also be obtained by the action of sulfur dichloride on osmium tetroxide:[2]

2OsO
4
+ 8SCl
2
+ 5Cl
2
→ 2OsCl
5
+ 8SOCl
2

Physical properties

Osmium(V) chloride forms a black dimeric solid, isomorphic with rhenium(V) chloride. OsCl
5
is sparingly soluble in non-polar solvents.[2] It is soluble in POCl3 to form a red-brown solution, which can crystallize OsCl5·POCl3.[6]

References

  1. "Crystallography Open Database" (in en). qiserver.ugr.es. http://qiserver.ugr.es/cod/4344201.html. 
  2. 2.0 2.1 2.2 Burns, Robert C.; O'Donnell, Thomas A. (1 November 1979). "Preparation and characterization of osmium pentachloride, a new binary chloride of osmium" (in en). Inorganic Chemistry 18 (11): 3081–3086. doi:10.1021/ic50201a027. ISSN 0020-1669. https://pubs.acs.org/doi/abs/10.1021/ic50201a027. Retrieved 31 March 2023. 
  3. Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001) (in en). Inorganic Chemistry. Academic Press. p. 1461. ISBN 978-0-12-352651-9. https://books.google.com/books?id=Mtth5g59dEIC&dq=Osmium+pentachloride&pg=PA1846. Retrieved 31 March 2023. 
  4. Dehnicke, Kurt; Lößberg, Rainer (1 December 1980). "Eine neue Synthese und das IR-Spektrum von Osmiumpentachlorid / A New Synthesis and the IR Spectrum of Osmiumpentachloride" (in de). Zeitschrift für Naturforschung B 35 (12): 1525–1528. doi:10.1515/znb-1980-1207. 
  5. Macintyre, Jane E. (23 July 1992) (in en). Dictionary of Inorganic Compounds. CRC Press. p. 2985. ISBN 978-0-412-30120-9. https://books.google.com/books?id=9eJvoNCSCRMC&dq=Osmium+pentachloride&pg=PA2985. Retrieved 31 March 2023. 
  6. Dehnicke, Kurt; Lößberg, Rainer (1980-12-01). "Eine neue Synthese und das IR-Spektrum von Osmiumpentachlorid / A New Synthesis and the IR Spectrum of Osmiumpentachloride". Zeitschrift für Naturforschung B (Walter de Gruyter GmbH) 35 (12): 1525–1528. doi:10.1515/znb-1980-1207. ISSN 1865-7117.