Crystallization of metastable monoclinic carnallite, KCl·MgCl2·6H2O: missing structural link in the carnallite family.
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ABSTRACT:
SUBMITTER: Pannach M
PROVIDER: S-EPMC7199198 | biostudies-literature | 2020 May
REPOSITORIES: biostudies-literature
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Crystallization of metastable monoclinic carnallite, KCl·MgCl<sub>2</sub>·6H<sub>2</sub>O: missing structural link in the carnallite family.
Pannach Melanie M Paschke Iris I Schmidt Horst H Freyer Daniela D Voigt Wolfgang W
Acta crystallographica. Section C, Structural chemistry 20200429 Pt 5
During evaporation of natural and synthetic K-Mg-Cl brines, the formation of almost square plate-like crystals of potassium carnallite (potassium chloride magnesium dichloride hexahydrate) was observed. A single-crystal structure analysis revealed a monoclinic cell [a = 9.251 (2), b = 9.516 (2), c = 13.217 (4) Å, β = 90.06 (2)° and space group C2/c]. The structure is isomorphous with other carnallite-type compounds, such as NH<sub>4</sub>Cl·MgCl<sub>2</sub>·6H<sub>2</sub>O. Until now, natural an ...[more]
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