Title: The thermal decomposition of ammonium hexafluorogallate and ammonium hexafluoroindate. New crystalline forms of gallium fluoride and indium fluoride
Abstract: Ammonium hexafluorogallate, (NH4)3GaF6, and ammonium hexafluoroindate, (NH4)3InF6, occur in two polymorphic forms, a low temperature tetragonal and a high temperature cubic form, which transform reversibly. They decompose on heating with an initial loss of 2 moles of ammonium fluoride, forming ammonium tetrafluorogaIlate, NH4GaF4, and ammonium tetra fluoroindate, NH4InF4. Further heating results in the gradual loss of ammonium fluoride; the final decomposition products are γ-gallium fluoride and γ-indium fluoride, new crystalline forms. These convert on further heating to the common hexagonal forms of the trifluorides. The structural relationship of the compounds are discussed and compared with those of the aluminum analogs.
Publication Year: 1973
Publication Date: 1973-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 37
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