Rhenium (VI) fluoride

Structural formula
General
Surname	Rhenium (VI) fluoride
other names	Rhenium hexafluoride
Molecular formula	ReF 6
Brief description	yellow crystalline solid
External identifiers / databases
EC number	233-172-2
ECHA InfoCard	100.030.144
PubChem	66231
Wikidata	Q408323
properties
Molar mass	300.20 g mol −1
Physical state	liquid
density	4.94 g cm −3 (−140 ° C)
Melting point	18.5 ° C
boiling point	33.7 ° 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 .

Rhenium (VI) fluoride (ReF ₆ ), usually also rhenium hexafluoride , is a chemical compound of the elements rhenium and fluorine and belongs to the group of hexafluorides .

presentation

Rhenium hexafluoride is produced by reacting rhenium (VII) fluoride ReF ₇ with rhenium metal in an autoclave at 300 ° C.

{\ displaystyle {\ ce {6 ReF7 + Re -> 7 ReF6}}}

The representation from the elements is also possible.

{\ displaystyle {\ ce {Re + 3 F2 -> ReF6}}}

properties

At room temperature, rhenium hexafluoride is a liquid that solidifies to a yellow crystalline solid at 18.5 ° C or boils at 33.7 ° C. It crystallizes in the orthorhombic crystal system (measured at −140 ° C) in the space group Pnma (No. 62) with the lattice parameters a = 941.7 pm , b = 857.0 pm and c = 496.5 pm and four formula units per unit cell with a calculated density of 4.94 g cm ⁻³ . The ReF ₆ molecule is octahedral ( O _h ); the Re – F bond length is 182.3 pm. Template: room group / 62

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. 4-85.
↑ ^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.
↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 271.

literature

Gmelin's Handbook of Inorganic Chemistry , System No. 70, Rhenium, Part A, pp. 102-105.

[CRC_HANDBOOK_ReF6-1] 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. 4-85.

[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.

[brauer-4] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 271.