525. Ammonium Hexafluorogallate

Nomenclature

CAS number: 14639-94-2
(OC-6-11)-Hexafluorogallate(3) ammonium (1:3); ammonium hexafluogallate.
F6GaH12N3; mol wt 237.83.
F 47.93%, Ga 29.32%, H 5.09%, N 17.67%.
(NH4)3GaF6.

Description and references

Prepd from Ga(OH)3, HF and NH4F: Hannebohn, Klemm, Z. Anorg. Allg. Chem. 229, 341 (1936); Kwasnik in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed., (Academic Press, New York, 2nd ed., 1963) p 228.

Properties

Octahedra. On heating in air changes to Ga2O3; on heating in vacuo at 200° for several hours forms GaN.

Use

In the prepn of GaF3.