Ammonium hexachloropalladate
| Names | |
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| IUPAC name
diazanium; hexach loropalladium(2-)
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| Other names
Ammonium hexachloropalladate(IV)
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.038.943 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Cl6H8N2Pb | |
| Molar mass | 456.0 g·mol−1 |
| Appearance | red-brown crystals |
| Density | 2.148 g/cm3 |
| slightly soluble | |
| Hazards | |
| GHS labelling: | |
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| Warning | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium hexachloropalladate is an inorganic chemical compound with the chemical formula (NH4)2PdCl6.[1][2]
Synthesis
[edit]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
[edit]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
[edit]The compound decomposes upon heating to form ammonium tetrachloropalladate(II):
- (NH4)2[PdCl6] → (NH4)2[PdCl4] + Cl2
References
[edit]- ^ "Ammonium hexachloropalladate(IV)". Sigma Aldrich. Retrieved 7 October 2024.
- ^ "Ammonium Hexachloropalladate(IV)". American Elements. Retrieved 7 October 2024.
- ^ 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.
- ^ 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.
- ^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 254. Retrieved 7 October 2024.