Caesium hexafluorocobaltate(IV) explained

Caesium hexafluorocobaltate(IV) is a salt with the chemical formula . It can be synthesized by the reaction of and fluorine. 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 T_2g³E_g².^[2]

See also

• Percobaltate

Notes and References

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