Potassium hexachloropalladate(IV) is an inorganic chemical compound with the chemical formula K2[PdCl6].[2][3] It forms cubic red-brown crystals.[4]

Properties

The compound decomposes when heated or in a hot concentrated hydrochloric acid solution:

K2[PdCl6] → K2[PdCl4] + Cl2

Synthesis

Potassium hexachloropalladate(IV) can be prepared by the dissolution of potassium tetrachloropalladate(II) in aqua regia:

3K2[PdCl4] + 6HCl + 2HNO3 → 3K2[PdCl6] + 2NO + 4H2O

It can also be prepared by passing chlorine through a suspension of potassium tetrachloropalladate(II) in a solution of potassium chloride:[5]

K2[PdCl4] + Cl2 → K2[PdCl6]

Uses

The compound is used in photography.[6]

It is also used as an organic reagent and pharmaceutical intermediate.[7]

References

  1. ↑ "Potassium hexachloropalladate(IV)". Sigma Aldrich. Retrieved 13 March 2025.
  2. ↑ "Potassium Hexachloropalladate(IV) | AMERICAN ELEMENTS®". American Elements. Retrieved 13 March 2025.
  3. ↑ "SAFETY DATA SHEET". Thermo Fisher. Retrieved 13 March 2025.
  4. ↑ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. C-252. Retrieved 13 March 2025.
  5. ↑ Griffith, William P.; Robinson, Stephen D.; Swars, Kurt; Griffith, William P.; Swars, Kurt (1989). Pd Palladium: Palladium Compounds (8th Edition / Achte, völlig neu bearbeitete Auflage ed.). Berlin Heidelberg: Springer. p. 151. ISBN 978-3-662-09190-6.
  6. ↑ Turkington, Robert (26 October 2009). Chemicals Used for Illegal Purposes. John Wiley & Sons. p. 186. ISBN 978-0-470-18780-7. Retrieved 13 March 2025.
  7. ↑ "Potassium hexachloropalladate(IV), Pd 26.3% min, Thermo Scientific Chemicals | Fisher Scientific". Fisher Scientific. Retrieved 13 March 2025.
source: https://en.wikipedia.org/wiki/Potassium_hexachloropalladate(IV)