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Acta Cryst. (2005). E61, i132-i134 [ doi:10.1107/S1600536805017897 ]
Abstract: The structure of KNb5O13 consists of two-dimensional slabs of edge- and corner-sharing NbO6 octahedra, and these slabs are interconnected to form the three-dimensional framework. The K+ cations reside in the empty channels. Among the three crystallographically independent Nb atoms, the coordination around the Nb atom bridging the slabs is more regular than those of the other Nb atoms. A bond-valence calculation indicates that the charge balance should be represented by [K+][Nb5+]5[O2-]13.
Online 17 June 2005
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