Chromium pentafluoride

Chromium pentafluoride
Names
IUPAC name
Chromium(V) fluoride
Other names
Chromium fluoride, Chromium(V) fluoride, Pentafluorochromium, Pentafluoridochromium
Identifiers
14884-42-5
ChemSpider 4574207
Jmol interactive 3D Image
PubChem 5460742
Properties
CrF5
Molar mass 291.71 g/mol
Appearance red crystals[1]
Density 2.89 g/cm3[1]
Melting point 34 °C (93 °F; 307 K)[1]
Boiling point 117 °C (243 °F; 390 K)[1]
Structure
Orthorhombic[1]
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]

See also

References

  1. 1 2 3 4 5 Perry, Dale L. (2011). Handbook of Inorganic Compounds, Second Edition. Boca Raton, Florida: CRC Press. p. 125. ISBN 978-1-43981462-8. Retrieved 2014-01-10.
  2. Jacques Guertin, James A. Jacobs, Cynthia P. Avakian, ed. (2004). Chromium(VI) Handbook. CRC Press. p. 30. ISBN 9780203487969.
  3. Amit Aora (2005). Text Book Of Inorganic Chemistry. Discovery Publishing House. p. 649.
  4. A. G. Sharpe (1983). Advances in Inorganic Chemistry 27. Academic Press. p. 103. ISBN 9780080578767.
  5. Riedel, Sebastian; Kaupp, Martin (2009). "The highest oxidation states of the transition metal elements" (PDF). Coordination Chemistry Reviews 253 (5–6): 606–624. doi:10.1016/j.ccr.2008.07.014.
  6. A. G. Sharpe (December 2012). J.H. Simons, ed. Fluorine Chemistry 2. Elsevier. p. 24. ISBN 9780323145435.
  7. "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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