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Anionic clays as hosts for anchored synthesis: Interlayer bromination of maleate and fumarate ions in nickel-zinc layered hydroxy double salt

Arulraj, James and Rajamathi, Jacqueline T and Prabhu, Kandikere Ramaiah and Rajamathi, Michael (2007) Anionic clays as hosts for anchored synthesis: Interlayer bromination of maleate and fumarate ions in nickel-zinc layered hydroxy double salt. In: Solid State Sciences, 9 (9). pp. 812-816.

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Abstract

Anionic clay-like nickel zinc hydroxyacetate, $Ni_3Zn_2(OH)_8(OAc)_2.2H_2O$ was ion exchanged with maleate and fumarate ions. While the maleate enters as monoanion, fumarate enters as dianion. Also these anions take up different orientations in the interlayer region. The intercalated organic species could be reacted with bromine water in such a way that the brominated product remains intercalated making the reaction a true intracrystalline reaction. The stereochemistry of the reaction of the intercalated fumarate was identical to that of the free fumarate ion – both yielding only the anti addition product. While free maleate ion yielded only the anti addition product, the intercalated maleate ion yielded a small percentage of the syn addition product along with the anti addition product. The organic products could be quantitatively recovered by anion exchange with oxalate ions.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Anionic clay;Hydroxy salt;Intercalation;Intracrystalline reaction.
Department/Centre: Division of Chemical Sciences > Organic Chemistry
Date Deposited: 03 Dec 2008 06:53
Last Modified: 19 Sep 2010 04:52
URI: http://eprints.iisc.ernet.in/id/eprint/16553

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