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$A^ILaNb_2O_7$ : A New Series of Layered Perovskites Exhibiting Ion Exchange and Intercalation Behavior

Gopalakrishnan, J and Bhat, Vasudeva and Raveau, B (1987) $A^ILaNb_2O_7$ : A New Series of Layered Perovskites Exhibiting Ion Exchange and Intercalation Behavior. In: Materials Research Bulletin, 22 (3). pp. 413-417.

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Abstract

A new series of layered perovskite oxides, $A^ILaNb_2O_7$ (A = Li, Na, K, Rb, Cs, $NH_4$) constituting n = 2 members of the family $A A'_{n-1}B_nO_{3n+1}$, has been prepared. Their structure consists of double perovskite slabs interleaved by A atoms. Hydrated $HLaNb_2O_7$ is formed by topotactic proton exchange of the A atoms in $ALaNb_2O_7$ (A = K, Rb, Cs). The hydrate readily loses water to give anhydrous $HLaNb_2O_7$ which is isostructural with $RbLaNb_2O_7$. $HLaNb_2O_7$ exhibits Bronsted acidity forming intercalation compounds with bases such as n-octylamine and pyridine.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: nlobates;perovskites;lanthanium.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 13 Jun 2008
Last Modified: 19 Sep 2010 04:45
URI: http://eprints.iisc.ernet.in/id/eprint/14291

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