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The title compound was synthesized by the redox reaction of copper(II) perchlorate hexahydrate and metallic tin in perchloric acid. Both the pyramidal [Sn(H2O)3]2+ cations and tetrahedral perchlorate anions lie on crystallographic threefold axes.
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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.
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The title compound was crystallized according to the solid–liquid phase diagram at lower temperatures. It is built-up of SnCl4(H2O)2 octahedral units and lattice water molecules. An intricate three-dimensional network of O—H
O and O—HCl hydrogen bonds between the complex molecules and the lattice water molecules is formed in the crystal structure.
O and O—HCl hydrogen bonds between the complex molecules and the lattice water molecules is formed in the crystal structure.research communicationsOpen access
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The crystal structures of the tetra- and hexahydrate phases of Ca(ClO4)2 consist of Ca2+ ions in distorted square-antiprismatic environments and of perchlorate tetrahedra. O—HO hydrogen bonds between water molecules and ClO4 units lead to the formation of a three-dimensional network in the structures.
O hydrogen bonds between water molecules and ClO4 units lead to the formation of a three-dimensional network in the structures.research communicationsOpen access
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The crystal structures of the tri-, tetra- and nonahydrate phases of Sr(ClO4)2 consist of Sr2+ ions coordinated by nine oxygen atoms from water molecules and perchlorate tetrahedra. O—HO hydrogen bonds between water molecules and ClO4 units lead to the formation of a three-dimensional network in each of the structures.
O hydrogen bonds between water molecules and ClO4 units lead to the formation of a three-dimensional network in each of the structures.research communicationsOpen access
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The crystal structures of ZnCl2·xH2O (x = 2.5, 3 and 4.5) consist of Zn2+ ions both in an octahedral and tetrahedral environment. O—HO hydrogen bonds between water molecules and tetrahedral ZnCl4 units lead to the formation of a three-dimensional network in each of the structures.
O hydrogen bonds between water molecules and tetrahedral ZnCl4 units lead to the formation of a three-dimensional network in each of the structures.
