Osmium (VI) fluoride

Crystal structure
	__ Os 6+ __ F -
Crystal system	orthorhombic
Space group	Pnma (No. 62)
Lattice parameters	a = 938.7 pm , b = 854.3 pm, c = 494.4 pm
General
Surname	Osmium (VI) fluoride
other names	Osmium hexafluoride
Ratio formula	OsF 6
Brief description	yellow crystalline solid
External identifiers / databases
EC number	237-382-5
ECHA InfoCard	100,033,969
PubChem	123327
Wikidata	Q899468
properties
Molar mass	304.22 g mol −1
Physical state	firmly
density	5.09 g cm −3 (−140 ° C)
Melting point	33.4 ° C
boiling point	47.5 ° C
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Osmium (VI) fluoride (OsF ₆ ), often also osmium hexafluoride , is a chemical compound of the elements osmium and fluorine and belongs to the group of hexafluorides .

presentation

Osmium hexafluoride is produced by direct conversion of the metal in an excess of elemental fluorine (F ₂ ) at 300 ° C.

{\ displaystyle {\ ce {Os + 3 F2 -> OsF6}}}

properties

Osmium hexafluoride is a yellow crystalline solid that melts at 33.4 ° C and boils at 47.5 ° C. It crystallizes in the orthorhombic crystal system (measured at −140 ° C) in the space group Pnma (space group no. 62) with the lattice parameters a = 938.7 pm , b = 854.3 pm and c = 494.4 pm and four formula units per unit cell with a calculated density of 5.09 g · cm ⁻³ . The OsF ₆ molecule is octahedral ( O _h ); the Os – F bond length is 182.7 pm. Template: room group / 62

use

By reaction with tungsten hexacarbonyl may osmium (IV) fluoride are recovered.

Individual evidence

↑ ^a ^b ^c ^d David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-79.
↑ ^a ^b ^c ^d T. Drews, J. Supeł, A. Hagenbach, K. Seppelt: "Solid State Molecular Structures of Transition Metal Hexafluorides", in: Inorganic Chemistry , 2006 , 45 (9), pp. 3782-3788; doi : 10.1021 / ic052029f ; PMID 16634614 .
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ G. Singh: Chemistry Of Lanthanides And Actinides . Discovery Publishing House, 2007, ISBN 81-8356-241-8 , pp. 307 ( limited preview in Google Book search).

literature

Gmelin's Handbook of Inorganic Chemistry , System No. 53, Osmium, Supplement Volume 1, pp. 111-114.

[CRC_HANDBOOK_OsF6-1] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-79.

[D_BLOCK_XF6-2] T. Drews, J. Supeł, A. Hagenbach, K. Seppelt: "Solid State Molecular Structures of Transition Metal Hexafluorides", in: Inorganic Chemistry , 2006 , 45 (9), pp. 3782-3788; doi : 10.1021 / ic052029f ; PMID 16634614 .

[NV-3] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[G._Singh-4] G. Singh: Chemistry Of Lanthanides And Actinides . Discovery Publishing House, 2007, ISBN 81-8356-241-8 , pp. 307 ( limited preview in Google Book search).