Interlayer structure of iodide intercalated layered double hydroxides (LDHs)

Prasanna, SV and Kamath, P Vishnu and Shivakumara, C (2010) Interlayer structure of iodide intercalated layered double hydroxides (LDHs). In: Journal of Colloid and Interface Science, 344 (2). pp. 508-512.

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Abstract

The iodide-containing layered double hydroxides (LDHs) of Mg and Zn with AI crystallize by the inclusion of extensive positional disorder of I- ions in the interlayer region. I- ion given its poor charge to size ratio can neither screen effectively the positive charge nor participate in H-bonding with the metal hydroxide layers. Thereby the I- ions are not stabilized in sites close to the seat of positive charge of the metal hydroxide layers (6c), nor in sites that facilitate H-bonding (3b or 18h). On the other hand, OH- from water can do both and effectively displaces I- from the interlayer. (C) 2010 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Layered double hydroxides; Iodide; Positional disorder
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	08 Jun 2010 07:07
Last Modified:	19 Sep 2010 05:59
URI:	http://eprints.iisc.ernet.in/id/eprint/27001

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