Chromium pentafluoride

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Chromium pentafluoride
IUPAC name
Chromium(V) fluoride
Other names
Chromium fluoride, Chromium(V) fluoride, Pentafluorochromium, Pentafluoridochromium
3D model (JSmol)
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]
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[edit]


  1. ^ a b c d e 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, eds. (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. [permanent dead link]
  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.