Meso-functionalized octamethoxyporphyrins: A new class of nonasubstituted porphyrins

Panda, Pradeepta K and Krishnan, V (2005) Meso-functionalized octamethoxyporphyrins: A new class of nonasubstituted porphyrins. In: Journal of Chemical Sciences, 117 (2). pp. 73-84.

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Abstract

Octamethoxyporphyrin containing multiple-donor substituents has been functionalized for the first time. A large number of its mono- meso-substituted derivatives with substituents such as nitro, amino,N-methylamino, formyl, hydroxymethyl, oxime, cyano and carboxy functional groups have been synthesized and characterized. They form anew class of nonasubstituted porphyrins. Crystallographic studies on the cyano derivative show that the -C=N group is in conjugation with the prophyrin pi-system The calculated optical transition energies and the electron densities on the imino nitrogens of the synthesised porphyrins using AMI calculations correlate well with the experimentally observed data. Meso-substituted porphyrins are found tobe essentially planar.

Item Type:	Journal Article
Additional Information:	Copyright for this article belongs to Indian Academy of Sciences.
Keywords:	Octamethoxyporphyrin;meso-functionalization;nonasubstituted porphyrins;basicity;AM1 semi-empirical correlation
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	05 May 2005
Last Modified:	19 Sep 2010 04:18
URI:	http://eprints.iisc.ernet.in/id/eprint/3157

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