Study of Tutton's Salts (NH₄)M(SO₄)₂ · 6H₂O with Mixed Metal Ions in the Structure

Sa？etak Tutton's salts, (NH4hM(S04h' 6H20, in which M represents one, two or three different metal ions in the structure have been obtained previously. Because of similar properties of the transition . elements we started to study the system (NH4hS04-H20-MS04 (M= Mn, Fe, Co, Ni, Cu, Zn or mixtures of these elements) and we isolated the crystals (NH4hM(S04)2. 6H20 where M represents mixtures of Ni, Zn; Co, Ni, Zn; Co, Ni, Cu, Zn; Fe, Co, Ni, Cu, Zn; Mn, Fe, Co, Ni, Cu, Zn. The products were characterized by chemical analysis. X-ray powder photographs of the products confirmed that they have structures similar to those of other Tutton's salts. The thermal decomposition of the salts was studied in air and in an argon atmosphere and the final products were identified by X-ray powder photographs