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Charge-transfer interaction of picolines with iodine and pi-accepters- A spectroscopic study

Latha , J and Palaniappan , S and Sathyanarayana , DN (1994) Charge-transfer interaction of picolines with iodine and pi-accepters- A spectroscopic study. In: Indian journal of chemistry - section A: Inorganic, Physical, Theoretical and Analytical Chemistry, 33 (2). 104 -110 .

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Official URL: http://www.niscair.res.in/ScienceCommunication/Res...

Abstract

The interaction of 2-amino-6-methylpyridine, 2-picoline and 4-picoline as donors with iodine, 7,7',8,8'-tetracyanoquinodimethane,2,3-dichloro-5,6-dicyano-1,4-benzoquinone, p-chloranil, o-chloranil, 2,4,7-trinitro-9-fluorenone and 2,4,5,7-tetranitro-9-fluorenone as acceptors has been studied by measuring visible and ultraviolet spectra. Infrared, electron paramagnetic and nuclear magnetic resonance spectra have also been obtained. Kinetic parameters have been derived. The results indicate that the charge transfer interaction occurs through the formation of free radicals which is followed by a slow reaction to give a diamagnetic product. However, with iodine, the charge transfer complex formation occurs without the formation of free radicals. The donor site is inferred to be the lone pair of electrons of the amino nitrogen of 2-amino-6-methylpridine whereas for 2- and 4-picolines, the preferred site is lone pair of electrons on the pyridine nitrogen.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to National Institute of Science Communication and Information Resources.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 25 Mar 2011 05:26
Last Modified: 25 Mar 2011 05:26
URI: http://eprints.iisc.ernet.in/id/eprint/36283

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