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On the existence of hydrotalcite-like phases in the absence of trivalent cations

Kamath, Vishnu P and Therese, Helen Annal G and Gopalakrishnan, J (1997) On the existence of hydrotalcite-like phases in the absence of trivalent cations. In: Journal of Solid State Chemistry, 128 (1). pp. 38-41.

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Official URL: http://dx.doi.org/10.1006/jssc.1996.7144


alpha-Hydroxides of nickel(II) and cobalt(II) are hydrotalcite-like phases, possessing a layered double hydroxide (LDH) structure even though there are no trivalent cations in the lattice. While the LDHs acquire a positive charge on the hydroxide layers by the incorporation of trivalent cations, we suggest that the alpha-hydroxides acquire a positive charge by partial protonation of the hydroxyl ions according to the equation M(OH)(2)+xH(+) --> [M(OH)(2-x)(H2O)(x)](x+). As in the LDHs, charge balance is restored by the incorporation of anions in the interlayer region. (C) 1997 Academic Press.

Item Type: Journal Article
Publication: Journal of Solid State Chemistry
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 30 Jun 2011 14:29
Last Modified: 30 Jun 2011 14:29
URI: http://eprints.iisc.ac.in/id/eprint/38333

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