Crystallization of metastable monoclinic carnallite, KCl·MgCl2·6H2O: missing structural link in the carnallite family
Pannach, Melanie
Paschke, Iris
Schmidt, Horst
Freyer, Daniela
Voigt, Wolfgang
DOI: https://doi.org/10.1107/S2053229620005197
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8932
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8932
Pannach, Melanie; Paschke, Iris; Schmidt, Horst; Freyer, Daniela; Voigt, Wolfgang, 2020: Crystallization of metastable monoclinic carnallite, KCl·MgCl2·6H2O: missing structural link in the carnallite family. In: Acta Crystallographica Section C, Band 76, 5: 507 - 512, DOI: 10.1107/S2053229620005197.
|
Dokument öffnen: |
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 NH4Cl·MgCl2·6H2O. Until now, natural and synthetic carnallite, KCl·MgCl2·6H2O, was only known in its orthorhombic form [a = 16.0780 (3), b = 22.3850 (5), c = 9.5422 (2) Å and space group Pnna].
Statistik:
ZugriffsstatistikSammlung:
Schlagworte:
crystallizationmetastable
monoclinic
potassium carnallite
crystal structure
potash
fertilizer
This is an open access article under the terms of the Creative Commons Attribution License, which permits use,
distribution and reproduction in any medium, provided the original work is properly cited.