Diammonium tetrachloroplatinate
Chemical compound
From Wikipedia, the free encyclopedia
Diammonium tetrachloroplatinate is an inorganic compound with the chemical formula (NH4)2[PtCl4].
 2 | |
| Names | |
|---|---|
| IUPAC name
diazanium;tetrachloroplatinum(2-) | |
| Other names
Ammonium tetrachloroplatinate(II) | |
| Identifiers | |
3D model (JSmol) |
|
| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.034.076 |
| EC Number |
|
| 79515 | |
PubChem CID |
|
| UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
| Properties[1] | |
| (NH4)2[PtCl4] | |
| Molar mass | 372.96 g·mol−1 |
| Appearance | red solid |
| Density | 2.936 g/cm3 |
| Melting point | 140–150 °C (284–302 °F; 413–423 K) (decomposes) |
| soluble | |
| Solubility | insoluble in alcohol |
| Hazards | |
| GHS labelling:[2] | |
   | |
| Danger | |
| H301, H315, H317, H318, H334 | |
| P280, P301, P302, P305, P310, P330, P338, P351, P352 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Structure
The crystals have a cubic structure with the space group P4/mmm (space group number 123).
Synthesis
Diammonium tetrachloroplatinate can be synthesised by the reduction of ammonium hexachloroplatinate(IV) with ammonium oxalate:
- (NH4)2[PtCl6] + (NH4)2C2O4 → (NH4)2[PtCl4] + 2NH4Cl + 2CO2
Chemical properties
Diammonium tetrachloroplatinate decomposes if heated:
- (NH4)2[PtCl4] → PtCl2 + 2NH4Cl
Uses
Diammonium tetrachloroplatinate was used in photography.[3][4] It was also used in spectral analysis standard and in the preparation of platinum sponge and platinum catalytic agent.[5]