Crystal structure of 2-methylamino-3-nitro-4-p-tolylpyrano[3,2-c]chromen-5(4H)-one

J. Govindaraj, Y. AaminaNaaz, Jayabal Kamalraja, Paramasivam T. Perumal, A. SubbiahPandi*, W. T A Harrison (Editor)

*Corresponding author for this work

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In the racemic title compound, C20H16N2O5, the pyran ring adopts a shallow envelope conformation, with the stereogenic C atom displaced from the other atoms by 0.273 (2) Å. The dihedral angle between the fused-ring system and the pendant p-tolyl group is 87.62 (7)°. The molecular conformation is consolidated by an intramolecular N - H⋯O hydrogen bond, which generates an S(6) ring. In the crystal, molecules are linked by C - H⋯O interactions, resulting in [010] chains.

Original languageEnglish
Pages (from-to)o158-o159
Number of pages2
JournalActa Crystallographica Section E: Structure Reports Online
Issue number3
Early online date7 Feb 2015
Publication statusPublished - 1 Mar 2015

Bibliographical note

The authors thank Dr Babu Varghese, SAIF, IIT, Chennai, India, for the data collection.


  • Biological activity
  • Chromene derivatives
  • Crystal structure
  • Hydrogen bonding
  • Pyrano[3,2-c]chromenone


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