Crystallization in the Three-Component Systems Rb<sub>2</sub>SO<sub>4-</sub>MSO<sub>4-</sub>H<sub>2</sub>O (M = Mg, Co, Ni, Cu, Zn) at 298 K — Oak Academic Publishing
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Crystallization in the Three-Component Systems Rb<sub>2</sub>SO<sub>4-</sub>MSO<sub>4-</sub>H<sub>2</sub>O (M = Mg, Co, Ni, Cu, Zn) at 298 K
Department of Inorganic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria; 2Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.
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Department of Inorganic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria; 2Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.
1 Department of Inorganic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria; 2Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.
2 Department of Inorganic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria; 2Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.
The crystallization in the three-component systems Rb 2 SO 4 - MSO 4 - H 2 O (M = Mg, Co, Ni, Cu, Zn) is studied by the method of isothermal decrease of supersaturation. It has been established that isostructural double compounds, Rb 2 M(SO 4 ) 2 ·6H 2 O (M = Mg, Co, Ni, Cu, Zn), , crystallize from the ternary solutions within wide concentration ranges. The infrared spectra are discussed with respect to the normal vibrations of the sulfate ions and water molecules. The unit-cell group theoretical treatment of the double salts is presented. The extent of energetic dis tortions of guest ions (about 2 mol%) matrix-isolated in the respective selenates, (M ' = K, Rb, ; M " = Mg, Co, Ni, Cu, Zn), is commented.
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