Chemistry:Caesium hexafluorocobaltate(IV)

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Caesium hexafluorocobaltate(IV)
Cs2CoF6.svg
Identifiers
3D model (JSmol)
Properties
CoCs2F6
Molar mass 438.734517 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Caesium hexafluorocobaltate(IV) is a salt with the chemical formula Cs2CoF6. It can be synthesized by the reaction of Cs3[(CoCl4)Cl] and fluorine.[1] The salt contains rare example of cobalt(IV) complex, i.e. [CoF6]2-.

It has cubic K2PtCl6 structure, with the lattice constant a = 8.91 Å, and the length of Co-F bond is 1.73 Å.[1] The complex is ferromagnetic and the ground state of Co(IV) is T2g3Eg2.[2]

See also

References

  1. 1.0 1.1 Quail, J. W.; Rivett, G. A. (1 August 1972). "Complex Fluorides of Tetravalent Cobalt". Canadian Journal of Chemistry 50 (15): 2447–2450. doi:10.1139/v72-394. 
  2. Allen, Geoffrey Charles; Warren, Keith D. (1 September 1969). "Electronic spectrum of the hexafluorocobaltate(IV) anion". Inorganic Chemistry 8 (9): 1902–1904. doi:10.1021/ic50079a019.