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    • Structure of 3-ethyl-6-phenyl-4-carbomethoxy-l·H-2-pyridone, an anti-tubercular metabolite

      M Nethaji Vasantha Pattabhi E J Gabe

      Volume 101 Issue 1 February 1989 pp 19-24

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/101/01/0019-0024

    • Keywords

       

      Anti-tubercular metabolite; dimers; crystal structure

    • Abstract

       

      C15H15N03,Mr=257·28, rhombohedral, R≈3,a=40·510(4),c=4·5456(3)Å,V=6460(2)Å,Z=18,dc=1·1905(3)g/cm3, CuKα(λ=1·5418Å), μ= 6·5cm−1,F(000)=2448,T=295K, finalR(F)=0·091,wR=0·141 for 1425 significant reflections,I≤2·5 σ(I). The molecules are stacked along thec axis and are stabilized in the unit cell by N−…O and C−H…O types of hydrogen bonds. Centrosymmetrically related molecules form dimers about the centre of inversion, and the hydrogen bond pattern is reminiscent of pyrimidine-purine base pairing in nucleotides.

    • Author Affiliations

       

      M Nethaji1 2 Vasantha Pattabhi1 2 E J Gabe1 2

      1. Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Madras - 600025, India
      2. Division of Chemistry, National Research Council, Ottawa - K1A OR6, Canada

    • Dates

       
      Published
      February 1989
      Manuscript received
      2 June 1988
      Manuscript revised
      5 August 1988

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