Ammonium hexachloropalladate

Ammonium hexachloropalladate
Names
IUPAC name
diazanium; hexach loropalladium(2-)
Other names
Ammonium hexachloropalladate(IV)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.038.943 Edit this at Wikidata
EC Number
  • 242-854-9
  • InChI=1S/6ClH.2H3N.Pd/h6*1H;2*1H3;/q;;;;;;;;+4/p-4
    Key: LOLIPEAFAJNGJM-UHFFFAOYSA-J
  • [NH4+].[NH4+].Cl[Pd-2](Cl)(Cl)(Cl)(Cl)Cl
Properties
Cl6H8N2Pb
Molar mass 456.0 g·mol−1
Appearance red-brown crystals
Density 2.148 g/cm3
slightly soluble
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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.