Transformations of Ruddlesden-Popper Oxides to New Layered Perovskite Oxides by Metathesis Reactions

Gopalakrishnan, J and Sivakumar, T and Ramesha, K and Thangadurai, V and Subbanna, GN (2000) Transformations of Ruddlesden-Popper Oxides to New Layered Perovskite Oxides by Metathesis Reactions. In: Journal of American Chemical Socety, 122 (26). pp. 6237-6241.

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Abstract

We report transformations of the Ruddlesden-Popper (R-P) oxide, K2La2Ti3O10, to layered perovskite oxides, (Bi2O2)La2Ti3O10, MLa2Ti3O10 (M = Pb, Ba, Sr), and (VO)La2Ti3O10, by a novel metathesis reaction with BiOCl-, MCI2, and VOSO4. 3H(2)O, respectively. The formation of (VO)La2Ti3O10, which occurs in aqueous medium around 100 degrees C, suggests that the reaction is most likely topotactic, where the structural integrity of the perovskite sheet is preserved. We believe that the method described here provides a new general route for the synthesis/assembly of layered perovskite materials containing MX/M2X2 sheets, as indeed shown by the independent report of (CuX)LaNb2O7 synthesis by a similar reaction.

Item Type:	Journal Article
Publication:	Journal of American Chemical Socety
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	20 Nov 2009 06:08
Last Modified:	19 Sep 2010 05:01
URI:	http://eprints.iisc.ac.in/id/eprint/18293

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