Crystal structure of 2,3-diphenyl-2,3-dihydro-4H-1,3-benzothiazin-4-one 1-oxide

Hemant P. Yennawar, Ryan Fox, Quentin J. Moyer, Ziwei Yang, Lee J. Silverberg

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


In the racemic title compound, C20H15NO2S, the planes of the two phenyl substituents form dihedral angles of 48.97 (15) and 69.26 (15)° with that of the fused benzene ring of the parent benzothiazine ring, while the heterocyclic thiazine ring exhibits a screw-boat pucker. The O atom on the S atom of the ring is pseudo-axial on the thiazine ring and trans to the 2-phenyl group. In the crystal, molecules are arranged in layers in the ac plane, the layers being linked across b through intermolecular C - H⋯O hydrogen-bonding interactions.

Original languageEnglish (US)
Pages (from-to)1189-1191
Number of pages3
JournalActa Crystallographica Section E: Crystallographic Communications
StatePublished - 2017

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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