Ammonium hexachloropalladate
Chemical compound
From Wikipedia, the free encyclopedia
Ammonium hexachloropalladate is an inorganic chemical compound with the chemical formula (NH4)2PdCl6.[1][2]
| Names | |
|---|---|
| IUPAC name
diazanium; hexachloropalladium(2-) | |
| Other names
Ammonium hexachloropalladate(IV) | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.038.943 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| Cl6H8N2Pd | |
| Molar mass | 355.20 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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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 can be precipitated from a solution of hexachloropalladate by adding ammonium chloride:[3]
- H2PdCl6 + 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