Potassium hexachloropalladate(IV)

Potassium hexachloropalladate(IV)
Names
	IUPAC name dipotassium;hexachloropalladium(2-)
	Other names Dipotassium Hexachloropalladate(2-)
Identifiers
CAS Number	16919-73-6 ;
ChEBI	CHEBI:231511;
ChemSpider	55724;
ECHA InfoCard	100.037.234
EC Number	240-974-6;
PubChem CID	61852;
CompTox Dashboard (EPA)	DTXSID30926860;
	InChI InChI=1S/6ClH.2K.Pd/h61H;;;/q;;;;;;2+1;+4/p-6 Key: OEDRXJBJMMJUSV-UHFFFAOYSA-H;
Properties
Chemical formula	Cl6K2Pd
Molar mass	397.32 g·mol−1
Appearance	red-brown crystals
Density	2.74 g/cm3
Melting point	525 °C
Solubility in water	Poorly soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319
Precautionary statements	P305, P338, P351
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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

^ "Potassium hexachloropalladate(IV)". Sigma Aldrich. Retrieved 13 March 2025.
^ "Potassium Hexachloropalladate(IV) | AMERICAN ELEMENTS®". American Elements. Retrieved 13 March 2025.
^ "SAFETY DATA SHEET". Thermo Fisher. Retrieved 13 March 2025.
^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. C-252. Retrieved 13 March 2025.
^ 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.
^ 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.
^ "Potassium hexachloropalladate(IV), Pd 26.3% min, Thermo Scientific Chemicals | Fisher Scientific". Fisher Scientific. Retrieved 13 March 2025.

[1] "Potassium hexachloropalladate(IV)". Sigma Aldrich. Retrieved 13 March 2025.

[AA-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.

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