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K8Gd3Si12O32Cl · 2H2O, a new member of the family of porous silicates with K and RE elements

  • Structure of Inorganic Compounds
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Abstract

Crystals of K8Gd3Si12O32Cl · 2H2O (space group \(P\bar 1\)), a new member of the family of porous silicates containing rare earths, are obtained under hydrothermal conditions. The structure retains the main features of the family in which original one-story layers of Si-tetrahedra formed by 6-membered rings of two types and large-in-diameter 8-membered and 12-membered rings are bound by Gd-octahedra to form a framework. Large pores in the interlayer space of the mixed framework are filled with K+ ions. The penetration of Cl− ions from a concentrated mineralizing solution into the centers of the eight-membered rings of the layer corroborates the ion-exchanging properties of the crystals of this structural type. The filling of rings and pores of different types in different members of the family by K+ and Cl− ions, hydroxyl groups, and water molecules is analyzed.

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Authors and Affiliations

  1. Faculty of Geology, Moscow State University, Moscow, 119992, Russia

    A. P. Zorina, E. L. Belokoneva & O. V. Dimitrova

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  1. A. P. Zorina
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  2. E. L. Belokoneva
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  3. O. V. Dimitrova
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Correspondence to E. L. Belokoneva.

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Original Russian Text © A.P. Zorina, E.L. Belokoneva, O.V. Dimitrova, 2014, published in Kristallografiya, 2014, Vol. 59, No. 1, pp. 41–45.

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Zorina, A.P., Belokoneva, E.L. & Dimitrova, O.V. K8Gd3Si12O32Cl · 2H2O, a new member of the family of porous silicates with K and RE elements. Crystallogr. Rep. 59, 36–40 (2014). https://doi.org/10.1134/S1063774514010209

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  • DOI: https://doi.org/10.1134/S1063774514010209

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