Li(2)Ca(1.5)Nb(3)O(10) from X-ray powder data

Lithium calcium niobium oxide (2/1.5/3/10), Li(2)Ca(1.5)Nb(3)O(10), has been synthesized by conventional solid-state reaction. Its structure consists of triple-layer perovskite slabs of corner-sharing NbO(6) octa­hedra inter­leaved with lithium ions; Ca cations partially occupy the perovskite A site...

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Detalles Bibliográficos
Autores principales: Zhu, Bai-Chuan, Tang, Kai-Bin
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2011
Materias:
Inorganic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3100027/
https://www.ncbi.nlm.nih.gov/pubmed/21753922
http://dx.doi.org/10.1107/S160053681100688X
Descripción
Sumario:Lithium calcium niobium oxide (2/1.5/3/10), Li(2)Ca(1.5)Nb(3)O(10), has been synthesized by conventional solid-state reaction. Its structure consists of triple-layer perovskite slabs of corner-sharing NbO(6) octa­hedra inter­leaved with lithium ions; Ca cations partially occupy the perovskite A sites at 75% occupancy probability. All eight atoms in the asymmetric unit are on special positions: one Nb atom has site symmetry 4/mmm; the second Nb, both K, the Sr and two O atoms have site symmetry 4mm; the remaining two O atoms have site symmetries 2mm. and mmm., respectively.

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