Ammonium hexafluoroplatinate
Chemical compound
From Wikipedia, the free encyclopedia
Ammonium hexafluoroplatinate is an inorganic chemical compound with the chemical formula (NH4)2PtF6. It forms pale yellow, cubic crystals.
| Names | |
|---|---|
| Other names
Ammonium hexafluoroplatinate(IV) | |
| Identifiers | |
3D model (JSmol) |
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PubChem CID |
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| Properties | |
| F6H8N2Pt | |
| Molar mass | 345.152 g·mol−1 |
| Appearance | Pale yellow crystals |
| reacts with water | |
| Structure[1] | |
| cubic | |
| Fm3m | |
a = 8.451 Å, b = 8.451 Å, c = 8.451 Å α = 90°, β = 90°, γ = 90° | |
Lattice volume (V) |
603.6 Å3 |
Formula units (Z) |
4 units per cell |
| Hazards | |
| GHS labelling: | |
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 hexafluoroplatinate can be prepared by direct fluorination of potassium hexachloroplatinate.[1]
It can also be prepared by treating lanthanum(III) hexafluoroplatinate with ammonium hydroxide:[2]
- La2[PtF6]3 + 6 NH4OH → 3 (NH4)2PtF6 + 2 La(OH)3
Chemical properties
Ammonium hexafluoroplatinate hydrolyses, forming the insoluble platinum(IV) hydroxide:
- (NH4)2PtF6 + 4 H2O → Pt(OH)4 + 4 HF + 2 NH4F
