Osmium(V) chloride

Osmium(V) chloride
Names
	Other names pentachloroosmium, osmium pentachloride
Identifiers
CAS Number	71328-74-0;
3D model (JSmol)	Interactive image;
ChemSpider	4423016;
PubChem CID	5257384;
	InChI InChI=1S/5ClH.Os/h5*1H;/q;;;;;+5/p-5 Key: UVOYHLXSTOWTCX-UHFFFAOYSA-I;
	SMILES Cl[Os](Cl)(Cl)(Cl)Cl;
Properties
Chemical formula	Cl5Os
Molar mass	367.48 g·mol−1
Appearance	black solid
Density	4.09
Melting point	160 °C (320 °F; 433 K)
Solubility in water	soluble
Structure
Space group	P21/c
Lattice constant	a = 9.17 Å, b = 11.5 Å, c = 11.97 Å α = 90°, β = 109°°, γ = 90°.
Lattice volume (V)	1194 Å3
Formula units (Z)	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 OsCl₅.^[3]^[4]

Potential synthesis

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

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

^ "Crystallography Open Database". qiserver.ugr.es. Retrieved 31 March 2023.
^ ^a ^b ^c Burns, Robert C.; O'Donnell, Thomas A. (1 November 1979). "Preparation and characterization of osmium pentachloride, a new binary chloride of osmium". Inorganic Chemistry. 18 (11): 3081–3086. doi:10.1021/ic50201a027. ISSN 0020-1669. Retrieved 31 March 2023.
^ Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 1461. ISBN 978-0-12-352651-9. Retrieved 31 March 2023.
^ 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". Zeitschrift für Naturforschung B (in German). 35 (12): 1525–1528. doi:10.1515/znb-1980-1207.
^ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 2985. ISBN 978-0-412-30120-9. Retrieved 31 March 2023.
^ 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. 35 (12). Walter de Gruyter GmbH: 1525–1528. doi:10.1515/znb-1980-1207. ISSN 1865-7117.

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[1] "Crystallography Open Database". qiserver.ugr.es. Retrieved 31 March 2023.

[IO-2] Burns, Robert C.; O'Donnell, Thomas A. (1 November 1979). "Preparation and characterization of osmium pentachloride, a new binary chloride of osmium". Inorganic Chemistry. 18 (11): 3081–3086. doi:10.1021/ic50201a027. ISSN 0020-1669. Retrieved 31 March 2023.

[3] Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 1461. ISBN 978-0-12-352651-9. 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". Zeitschrift für Naturforschung B (in German). 35 (12): 1525–1528. doi:10.1515/znb-1980-1207.

[5] Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 2985. ISBN 978-0-412-30120-9. 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. 35 (12). Walter de Gruyter GmbH: 1525–1528. doi:10.1515/znb-1980-1207. ISSN 1865-7117.

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