Ammonium hexafluoroindate
Chemical compound
From Wikipedia, the free encyclopedia
Ammonium hexafluoroindate is an inorganic chemical compound with the chemical formula (NH4)3InF6.[1][2]
| Names | |
|---|---|
| Other names
Ammonium hexafluoroindate(III) | |
| Identifiers | |
3D model (JSmol) |
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| Properties | |
| F6H12InN3 | |
| Molar mass | 282.925 g·mol−1 |
| Appearance | colorless crystals |
| Density | g/cm3 |
| insoluble | |
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
The compound can be obtained by reacting ammonium fluoride and indium bromide in anhydrous methanol, or by reacting ammonium fluoride and indium fluoride in aqueous solution.[3]
Also, a reaction involving indium hydroxide and ammonium fluoride:[4]
- In(OH)3 + 3 HF + 3 NH4F → (NH4)3InF6 + 3 H2O
Physical properties
The compound decomposes at 120–170 °C to obtain NH4InF4, and further decomposes to InF3 at 185–300 °C.[5]
Ammonium hexafluoroindiate forms colorless crystals of tetragonal system, space group P4mnc,[6] insoluble in water.[4]
At 80 °C, a phase transition into the cubic phase occurs.