Ammonium tetrachloropalladate(II)
| Names | |
|---|---|
| IUPAC name
diazanium;tetrachloropalladium(2-)
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| Other names
Ammonium tetrachloropalladate, ammonium palladium chloride, diammonium tetrachloropalladate
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| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.034.075 |
| EC Number |
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| 45561 | |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Cl4H8N4Pd | |
| Molar mass | 312.31 g·mol−1 |
| Appearance | brown to green crystals |
| Density | 2.17 g/cm3 |
| Melting point | 140 °C |
| soluble | |
| Hazards | |
| GHS labelling:[1] | |
 
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| Warning | |
| H302, H312, H315, H319, H332, H335 | |
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 tetrachloropalladate(II) is a chemical compound with the chemical formula (NH4)2PdCl4.[2][3]
Synthesis
[edit]Slow evaporation of mixtures of solutions of tetrachloropalladium acid and ammonium chloride:
- H2[PdCl4] + 2NH4Cl → (NH4)2[PdCl4] + HCl
Passing chlorine through a palladium black suspension in a concentrated ammonium chloride solution:
- Pd + Cl2 + 2NH4Cl → (NH4)2[PdCl4]
Physical properties
[edit]Ammonium tetrachloropalladate(II) forms brown to olive green crysrals[4] of tetragonal crystal system, space group P 4/mmm, cell parameters: a = 0.721 nm, c = 0.426 nm, Z = 1.
Soluble in water,[5] insolible in ethanol.
Chemical properties
[edit]With the gradual addition of ammonia, the insoluble Vauquelin salt is formed.[6]
- 2(NH4)2[PdCl4] + 4NH3 → [Pd(NH3)4][PdCl4] + 4NH4Cl
Uses
[edit]The compound is used for the preparation of palladium metallic particles. In addition, it forms Pd-creatinine complexes, which is used in the field of catalysis and semiconductors.[7]
See also
[edit]References
[edit]- ^ "Ammonium tetrachloropalladate(II)". Sigma Aldrich. Retrieved 12 March 2025.
- ^ Malde, Pradip; Ware, Mike (30 December 2020). Platinotype: Making Photographs in Platinum and Palladium with the Contemporary Printing-out Process. Routledge. p. 63. ISBN 978-1-000-28116-3. Retrieved 12 March 2025.
- ^ "Ammonium Tetrachloropalladate(II) | AMERICAN ELEMENTS®". American Elements. Retrieved 12 March 2025.
- ^ Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds. CRC Press. p. 34. ISBN 978-1-4398-1462-8. Retrieved 12 March 2025.
- ^ Haynes, William M. (22 June 2012). CRC Handbook of Chemistry and Physics, 93rd Edition. CRC Press. p. 4-48. ISBN 978-1-4398-8049-4. Retrieved 12 March 2025.
- ^ Inorganic Syntheses, Volume 8. John Wiley & Sons. 22 September 2009. p. 234. ISBN 978-0-470-13274-6. Retrieved 12 March 2025.
- ^ "Ammonium tetrachloropalladate(II), Premion , 99.998% (metals basis), Pd 37%, Thermo Scientific Chemicals | Fisher Scientific". Fisher Scientific. Retrieved 12 March 2025.