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Caesium hexafluorocuprate(IV)

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Chemical compound with +4 oxidized copper
Caesium hexafluorocuprate(IV)
Names
Other names Cesium hexafluorocuprate; Dicesium hexafluorocuprate
Identifiers
CAS Number
3D model (JSmol)
InChI
  • InChI=1S/2Cs.Cu.6FH/h;;;6*1H/q2*+1;+4;;;;;;/p-6Key: JSYFPWMRKBASLN-UHFFFAOYSA-H
SMILES
  • ..F(F)(F)(F)(F)F
Properties
Chemical formula Cs2CuF6
Molar mass 443.35 g/mol
Appearance Red orange solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Caesium hexafluorocuprate is the inorganic compound with the chemical formula Cs2CuF6. It is a red solid that degrades upon contact with water. It was first prepared be heating CsCuCl
3 and caesium fluoride at 410°C under 350 atmospheres of fluorine:

2 CsCuCl3 + 2 CsF + 5 F2 → 2 Cs2CuF6 + 3 Cl2

The anion is a rare example of a copper(IV) complex. In terms of its electronic structure, the anion has a low-spin d configuration. It is thus susceptible to Jahn-Teller distortion.

References

  1. Jane E. Macintyre, ed. (1992). Dictionary of Inorganic Compounds. CRC Press. p. 3100. ISBN 9780412301209.
  2. Harnischmacher, Werner; Hoppe, Rudolf (1973). "Tetravalent Copper: Cs2". Angewandte Chemie International Edition in English. 12 (7): 582–583. doi:10.1002/anie.197305822.
  3. Grannec, J.; Tressaud, A.; Hagenmuller, P. (1984). "Some physical properties of d-transition metal fluorides in unusual oxidation states". Journal of Fluorine Chemistry. 25 (1): 83–90. Bibcode:1984JFluC..25...83G. doi:10.1016/S0022-1139(00)81198-7.

Further reading

Caesium compounds
Copper compounds
Cu(0,I)
Cu(I)
Cu(I,II)
Cu(II)
Cu(III)
Cu(IV)
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