Crystal structure of K2ZnSi3O8

W. A. Dollase and C. R. Ross II

Abstract

The structure of K2ZnSi3O8 has been determined using Rietveld analysis of X-ray powder diffraction data (Rp = 3.99%). With space group Imam and cell dimensions a = 5.285(1), b = 9.058(1), c = 8.535(1) Å, tetrahedrally coordinated Zn and Si atoms are disordered over one crystal-lographic site forming at tecto-(zincio)silicate structure with 8-coordinated K atoms in intervening large cavities. This is the first example of the aristotype of the NH4LiSO4 family of general formula, AT2O4, where A is a large alkali (or pseudo-alkali) atom and T represents tetrahedrally-coordinated atoms including: Al, Be, Co, Li, Mg, P, S, Si, and Zn.

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Zeitschrift für Kristallographie – Crystalline Materials offers a place for researchers to present results of their crystallographic studies. The journal includes theoretical as well as experimental research. It publishes Original Papers, Letters and Review Articles in manifold areas of crystallography.

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