# $K_{1-x}La_xCa_{2-x}Nb_3O_{10}$,a Layered Perovskite Series with Variable Interlayer Cation Density, and $LaCaNb_30_{10}$, a Novel Layered Perovskite Oxide with No Interlayer Cations

Uma, S and Gopalakrishnan, J (1993) $K_{1-x}La_xCa_{2-x}Nb_3O_{10}$,a Layered Perovskite Series with Variable Interlayer Cation Density, and $LaCaNb_30_{10}$, a Novel Layered Perovskite Oxide with No Interlayer Cations. In: Journal of Solid State Chemistry, 102 (2). pp. 332-339.

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## Abstract

A scries of layered perovskile oxides of the formula $K_{1-x}La_xCa_{2-x}Nb_3O_{10}$, for $0 < x\leq1.0$ have been prepared. All the members are isostruclural, possessing the structure of $KCa_2Nb_3O_{10}$. The interlayer potassium ions in the new series can be ion-exchanged with protons to give $H_{1-x}La_xCa_{2-x}Nb_3O_{10}$. The latter readily forms intercalation compounds of the formula $(CnH_{2n+1} NH_3)_{1-x}La_xCa_{2-x}Nb_3O_{10}$, just as the parent solid acid $HCa_2Nb_3O_{10}$The end member $LaCaNb_3O_{10}$ containing no interlayer cations is a novel layered perovskite oxide, being a n = 3 member of the series $A_{n-1}B_nX{3n+1}$.

Item Type: Journal Article Copyright of this article belongs to Elsevier. Division of Chemical Sciences > Solid State & Structural Chemistry Unit 12 Oct 2006 19 Sep 2010 04:31 http://eprints.iisc.ernet.in/id/eprint/8362