Research Article: Crystal structure and characterization of magnesium carbonate chloride hepta­hydrate

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.

Partial Text

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 ▸).




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