Acta Cryst. (2008). E64, o1704  [ doi:10.1107/S1600536808024628 ]

5H-1-Benzothiopyrano[2,3-b]pyridin-5-one

M. N. Khan, M. N. Tahir, M. A. Khan, I. U. Khan and M. N. Arshad

Abstract: Molecules of the title compound, C₁₂H₇NOS, with one half-molecule in the asymmetric unit, are disordered about a crystallographic centre of inversion. Refinement showed that the C=O group is disordered with the S atom and the N atom is disordered over four positions. Adjacent molecules are connected through C-HO hydrogen bonds and interactions (centroid-centroid distances of 3.635 and 3.858 Å).

Online 6 August 2008

Copyright © International Union of Crystallography
IUCr Webmaster