Ammonium hexafluoroindate

Ammonium hexafluoroindate
Names
Other names
Ammonium hexafluoroindate(III)
Identifiers
3D model (JSmol)
  • InChI=1S/6FH.In.3H3N/h6*1H;;3*1H3/q;;;;;;+3;;;/p-3
    Key: FSYGVNPMCCSLOH-UHFFFAOYSA-K
  • [NH4+].[NH4+].[NH4+].F[In-3](F)(F)(F)(F)F
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).

Ammonium hexafluoroindate is an inorganic chemical compound with the chemical formula (NH4)3InF6.

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.

Also, a reaction involving indium hydroxide and ammonium fluoride:

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.

Ammonium hexafluoroindiate forms colorless crystals of tetragonal system, space group P4mnc, insoluble in water.

At 80 °C, a phase transition into the cubic phase occurs.

References

  1. ^ Roberts, John E.; Laubengayer, A. W. (November 1957). "Fluoride Complexes of Indium(III) 1". Journal of the American Chemical Society. 79 (22): 5895–5897. doi:10.1021/ja01579a016. ISSN 0002-7863. Retrieved 30 August 2024.
  2. ^ "Ammonium hexafluoroindate(iii)". NIST. Retrieved 30 August 2024.
  3. ^ Zakalyukin, R. M.; Boltalin, A. I.; Fedorov, P. P. (2001). "Synthesis of ammonium hexafluoroindate". Zhurnal Neorganicheskoi Khimii. 8 (46): 1247–1249. ISSN 0044-457X. Retrieved 30 August 2024.
  4. ^ a b Brauer, Georg (2 December 2012). Handbook of Preparative Inorganic Chemistry V1. Elsevier. p. 229. ISBN 978-0-323-16127-5. Retrieved 30 August 2024.
  5. ^ Beck, Lynda K.; Haendler Kugler, Blanca; Haendler, Helmut M. (December 1973). "The thermal decomposition of ammonium hexafluorogallate and ammonium hexafluoroindate. New crystalline forms of gallium fluoride and indium fluoride". Journal of Solid State Chemistry. 8 (4): 312–317. Bibcode:1973JSSCh...8..312B. doi:10.1016/S0022-4596(73)80027-1. S2CID 95324633.
  6. ^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 108. Retrieved 30 August 2024.