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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/118/05/0393-0397

    • Keywords

       

      Metalloporphyrins; thienylporphyrins; steady-state emission; crystal structure

    • Abstract

       

      meso-Tetra (2′- and 3′-thienyl)porphyrins and their Zn(II)-complexes were examined by steady-state fluorescence measurements. These molecules exhibit significant bathochromic shift in their emission bands with decreased quantum yields relative to their correspondingmeso-tetraphenylporphyrin derivatives. The crystal structure of 5,10,15,20-tetrakis(3′-thienyl)porphinato zinc(II) shows planar and nonplanar stereochemical features of the macrocycle. One of the macrocycle shows nearly planar while the other exhibited predominantly saddle-shaped geometry. The extent of displacement of the Β-pyrrole carbons in the nonplanar (saddle) conformation is as high as ± 0·422 Å.

    • Author Affiliations

       

      P Bhyrappa1 M Sankar1 B Varghese1 P Bhavana1

      1. Department of Chemistry, Indian Institute of Technology, Madras, Chennai - 600 036
    • Dates

       
  • Journal of Chemical Sciences | News

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