I am not sure about the product ofthis reaction but the use of ammonium halides particularly the iodide and bromide was a standard procedure for
taking Sn4+ oxide (ie cassiterite) into soultion for analysis. Fused ammonium halides are very corrosive and aggressive and it is very likely that the
sublimate contains a chloroferrate complex but I'll bet there is a large excess of ammonium chloride. |