Osmium(V) chloride
(Redirected from Osmium pentachloride)
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| Other names
pentachloroosmium, osmium pentachloride
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| 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]
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Lattice volume (V)
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1194 Å3 |
Formula units (Z)
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8 |
| Related compounds | |
Related compounds
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Osmium pentafluoride; Rhenium pentachloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Osmium(V) chloride is an inorganic chemical compound of osmium metal and chlorine with the chemical formula OsCl5.[3][4]
Potential synthesis
[edit | edit source]Osmium(V) chloride can be obtained in small amounts by reacting osmium hexafluoride with excess boron trichloride:[5]
- 2OsF6 + 4BCl3 → 2OsCl5 + 4BF3 + Cl2
It can also be obtained by the action of sulfur dichloride on osmium tetroxide:[2]
- 2OsO4 + 8SCl2 + 5Cl2 → 2OsCl5 + 8SOCl2
Physical properties
[edit | edit source]Osmium(V) chloride forms a black dimeric solid, isomorphic with rhenium(V) chloride. OsCl5 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
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