Chromium pentafluoride

Chromium pentafluoride
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Names
	IUPAC name Chromium(V) fluoride
	Other names Chromium fluoride, Chromium(V) fluoride, Pentafluorochromium, Pentafluoridochromium
Identifiers
CAS Number	14884-42-5
ChemSpider	4574207
Jmol 3D model	Interactive image
PubChem	5460742
	InChI InChI=1S/Cr.5FH/h;5*1H/q+5;;;;;/p-5 Key: OMKYWARVLGERCK-UHFFFAOYSA-I ;
	SMILES F[Cr](F)(F)(F)F ;
Properties
Chemical formula	CrF5
Molar mass	291.71 g/mol
Appearance	red crystals
Density	2.89 g/cm3
Melting point	34 °C (93 °F; 307 K)
Boiling point	117 °C (243 °F; 390 K)
Structure
Crystal structure	Orthorhombic
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Chromium pentafluoride is the inorganic compound with the chemical formula CrF₅.^[2] It is a red volatile solid that melts at 30 °C, which easily hydrolyses to chromium(III) and chromium(VI).^[3] It has the same crystal structure as vanadium pentafluoride.^[4] It is the highest known chromium fluoride, since the hypothetical chromium hexafluoride has not yet been synthesized.^[5]

Chromium pentafluoride is one of the products of the action of fluorine on a mixture of potassium and chromic chlorides.^[6]

In terms of its structure, the compound is a one-dimensional coordination polymer. Each Cr(V) center has octahedral molecular geometry.^[7]

References

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↑ "The structures of CrF₅ and CrF₅*SbF₅" Shorafa, H.; Seppelt, K. Zeitschrift für Anorganische und Allgemeine Chemie 2009, vol. 635, p112-p114.

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