Rhodium (VI) fluoride

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Structural formula
Rhodium (VI) fluoride
General
Surname Rhodium (VI) fluoride
other names

Rhodium hexafluoride

Molecular formula RhF 6
Brief description

black crystalline solid

External identifiers / databases
CAS number 13693-07-7
PubChem 20488757
Wikidata Q413023
properties
Molar mass 216.91 g mol −1
Physical state

firmly

density

3.71 g cm −3 (−140 ° C)

Melting point

≈ 70 ° C

safety instructions
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 .

Rhodium (VI) fluoride (RhF 6 ), often also rhodium hexafluoride , is a chemical compound of the elements rhodium and fluorine and belongs to the group of hexafluorides .

presentation

Rhodium hexafluoride is produced by direct conversion of the metal in an excess of elemental fluorine (F 2 ).

properties

Rhodium hexafluoride is a black crystalline solid that melts at around 70 ° 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  = 932.3  pm , b  = 847.4 pm and c  = 491.0 pm and four formula units per unit cell with a calculated density of 3.71 g · cm −3 . The RhF 6 molecule is octahedral ( O h ); the Rh – F bond length is 182.4 pm. Template: room group / 62

Individual evidence

  1. a b c 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.
  2. a b c 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 .
  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.

literature