Ammonium hexachloropalladate is an inorganic chemical compound with the chemical formula (NH4)2PdCl6.[1][2]

Synthesis

Ammonium hexachloropalladate can be made by passing chlorine through a suspension of ammonium tetrachloropalladate(II) in ammonium chloride solution:

(NH4)2[PdCl4] + Cl2 → (NH4)2[PdCl6]

The compound is precipitated from the palladium(IV) chloride solution with adding ammonium chloride:[3]

PdCl6 + 2NH4Cl → (NH4)2[PdCl6] + 2HCl

Physical properties

Ammonium hexachloropalladate forms red-brown crystals[4] of cubic system, space group Fm3m, cell parameters a = 0.983 nm, Z = 4.[5]

It is slightly soluble in water.

Chemical properties

The compound decomposes upon heating to form ammonium tetrachloropalladate(II):

(NH4)2[PdCl6] → (NH4)2[PdCl4] + Cl2

References

  1. ^ "Ammonium hexachloropalladate(IV)". Sigma Aldrich. Retrieved 7 October 2024.
  2. ^ "Ammonium Hexachloropalladate(IV)". American Elements. Retrieved 7 October 2024.
  3. ^ Guindy, M. I. El (22 October 2013). Precious Metals 1982: Proceedings of the Sixth International Precious Metals Institute Conference, Held in Newport Beach, California, June 7 - 11, 1982. Elsevier. p. 466. ISBN 978-1-4831-8948-2. Retrieved 7 October 2024.
  4. ^ Lide, David R. (9 March 1995). CRC Handbook of Chemistry and Physics: A Ready-reference Book of Chemical and Physical Data. CRC Press. p. 4-41. ISBN 978-0-8493-0595-5. Retrieved 7 October 2024.
  5. ^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 254. Retrieved 7 October 2024.
Allikas: Https://en.wikipedia.org/wiki/Ammonium_hexachloropalladate
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