Date Published: August 01, 2020
Publisher: International Union of Crystallography
Author(s): Christine Rincke, Horst Schmidt, Gernot Buth, Wolfgang Voigt.
The structure of the stable double salt MgCO3·MgCl2·7H2O, obtained from concentrated solutions of MgCl2, is characterized by double chains of MgO octahedra and carbonate ions parallel to (100), interconnected by chloride ions.
In the context of CO2 research, the interactions of CO2 with salts and brine solutions are of great interest. Therefore, the system MgCl2–MgCO3–H2O–CO2 has been investigated. The only nonbasic salt containing carbonate and chloride ions is MgCO3·MgCl2·7H2O (Rincke, 2018 ▸).