Preparative investigations of bromoantimonates(III)

In aqueous hydrobromic acid the reaction between antimony tribromide and amine hydrobromides gives rise to only one type of bromoantimonate(III), irrespective of the initial ratio of the reactants. Different types of bromoantimonates containing the same protonated amine cation have been prepared by the interaction of antimony tribromide with the amine hydrobromide, in appropriate ratios, at higher temperatures in the absence of solvent and also by a metathetical reaction between an amine hydrobromide and bromoantimonate of another amine in acetone. Conductimetric titrations of antimony tribromide with amine hydrobromides in isopropanol were used to establish the stoichiometry of these reactions.