Abstract
The molecule of the title compound, C13H9NO2, is slightly twisted with a dihedral angle of 4.85 (9)° between the nine-membered ring system and the phenyl ring. The nine non-H atoms of the 1H-pyrrolo[2,1-c][1,4]oxazin-1-one system are coplanar [r.m.s. deviation = 0.0122 (2) Å]. In the crystal, weak intermolecular C—H⋯O interactions link molecules into chains along [10]. The crystal studied was an inversion twin with a 0.48624 (9):0.51376 (9) domain ratio.
Highlights
The molecule of the title compound, C13H9NO2, is slightly twisted with a dihedral angle of 4.85 (9) between the ninemembered ring system and the phenyl ring
PY is grateful to Tianjin University of Science &
R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger
Summary
Chantrapromma,b§ Yong-En Guoa and Nighat Afzac a Department of Pharmaceutical Engineering, Biotechnology College, Tianjin. BCrystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and c. R factor = 0.031; wR factor = 0.085; data-to-parameter ratio = 8.3. The molecule of the title compound, C13H9NO2, is slightly twisted with a dihedral angle of 4.85 (9) between the ninemembered ring system and the phenyl ring. The nine non-H atoms of the 1H-pyrrolo[2,1-c][1,4]oxazin-1-one system are coplanar [r.m.s. deviation = 0.0122 (2) Å]. Weak intermolecular C—H O interactions link molecules into chains along [110]. The crystal studied was an inversion twin with a 0.48624 (9):0.51376 (9) domain ratio
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