Caesium hexafluorocuprate(IV)

Caesium hexafluorocuprate is a quite rare example of the +4 oxidation state of copper with the chemical formula Cs₂CuF₆. It is a red solid at room temperature. It can be produced by mixing CsCuCl₃, caesium fluoride and fluorine together at high pressure.^[1]

Further readings

• Harnischmacher, Werner; Hoppe, Rudolf (1973). "Vierwertiges Kupfer: Cs₂[CuF₆]". Angewandte Chemie 85 (13): 590. doi:10.1002/ange.19730851312. 
• Müller, Bernd G. (1987). "Fluoride mit Kupfer, Silber, Gold und Palladium". Angewandte Chemie 99 (11): 1120. doi:10.1002/ange.19870991105. 
• Popova, T. V.; Aksenova, N. V. (2003). "Complexes of Copper in Unstable Oxidation States". Russian Journal of Coordination Chemistry 29 (11): 743. doi:10.1023/B:RUCO.0000003432.39025.cc. 
• Grannec, J (1984). "Some physical properties of d-transition metal fluorides in unusual oxidation states". Journal of Fluorine Chemistry 25: 83. doi:10.1016/S0022-1139(00)81198-7. 

References

1. ^ Mary Eagleson. <Concise encyclopedia chemistry>. Walter de Gruyter. ISBN 3-11-011451-8.