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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.

Quick facts Names, Identifiers ...
Ammonium hexafluoroplatinate
Names
Other names
Ammonium hexafluoroplatinate(IV)
Identifiers
3D model (JSmol)
  • InChI=1S/6FH.2H3N.Pt/h6*1H;2*1H3;/q;;;;;;;;+4/p-4
    Key: XJAQQYJSKDIYFW-UHFFFAOYSA-J
  • [NH4+].[NH4+].F[Pt-2](F)(F)(F)(F)F
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°
603.6 Å3
4 units per cell
Hazards
GHS labelling:
GHS05: CorrosiveGHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
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

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