• Meso-functionalized octamethoxyporphyrins: A new class of nonasubstituted porphyrins

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      https://www.ias.ac.in/article/fulltext/jcsc/117/02/0073-0084

    • Keywords

       

      Octamethoxyporphyrin; meso-functionalization; nonasubstituted porphyrins; basicity; AM1 semi-empirical correlation

    • 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 a new class of nonasubstituted porphyrins. Crystallographic studies on the cyano derivative show that the -C N group is in conjugation with the prophyrin π-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 to be essentially planar.

    • Author Affiliations

       

      Pradeepta K Panda1 V Krishnan1 2

      1. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore - 560 012, India
      2. Chemical Biology Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, IISc Campus, Bangalore - 560 012, India
    • Dates

       
  • Journal of Chemical Sciences | News

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