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Crystal structure of iron(III) perchlorate nona-hydrate.


ABSTRACT: Since the discovery of perchlorate salts on Mars and the known occurrence of ferric salts in the regolith, there is a distinct possibility that the title compound could form on the surface of Mars. [Fe(H2O)6](ClO4)3·3H2O was crystallized from aqueous solutions at low temperatures according to the solid-liquid phase diagram. It consists of Fe(H2O)6 octa-hedra (point group symmetry -3.) and perchlorate anions (point group symmetry .2) as well as non-coordinating water mol-ecules, as part of a second hydrogen-bonded coordination sphere around the cation. The perchlorate appears to be slightly disordered, with major-minor component occupancies of 0.773?(9):0.227?(9).

SUBMITTER: Hennings E 

PROVIDER: S-EPMC4257414 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature

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Crystal structure of iron(III) perchlorate nona-hydrate.

Hennings Erik E   Schmidt Horst H   Voigt Wolfgang W  

Acta crystallographica. Section E, Structure reports online 20141112 Pt 12


Since the discovery of perchlorate salts on Mars and the known occurrence of ferric salts in the regolith, there is a distinct possibility that the title compound could form on the surface of Mars. [Fe(H2O)6](ClO4)3·3H2O was crystallized from aqueous solutions at low temperatures according to the solid-liquid phase diagram. It consists of Fe(H2O)6 octa-hedra (point group symmetry -3.) and perchlorate anions (point group symmetry .2) as well as non-coordinating water mol-ecules, as part of a seco  ...[more]

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