Caesium hexafluorocobaltate(IV)

Caesium hexafluorocobaltate(IV) is a salt with the chemical formula Cs₂CoF₆. It can be synthesized by the reaction of Cs
₃[(CoCl
₄)Cl] and fluorine.^[1] The salt contains rare example of cobalt(IV) complex, i.e. [CoF₆]^2-.

Caesium hexafluorocobaltate(IV)

Identifiers
CAS Number	17250-28-1
3D model (JSmol)	Interactive image
InChI InChI=1S/2Cs.Cu.6FH/h;;;6*1H/q2*+1;+4;;;;;;/p-6 Key: JSYFPWMRKBASLN-UHFFFAOYSA-H
SMILES [Cs+].[Cs+].F[Co-2](F)(F)(F)(F)F
Properties
Chemical formula	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

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