Atioğlu, ZelihaAkkurt, MehmetJarrahpour, AliasgharHeiran, RoghayehÖzdemir, Namık2022-03-212022-03-212014https://doi.org/10.1107/S1600536814013464https://hdl.handle.net/20.500.12695/1550TARAMAPUBMEDIn the title compound, C22H21N3O5, the ?-lactam (azetidin-2-one) ring is nearly planar [maximum deviation = 0.010 (1) Å] and makes dihedral angles of 69.22 (5), 55.32 (5) and 89.42 (4)° with the least-squares planes formed by the four C atoms of the morpholine ring, which adopts a chair conformation, the benzene ring and the xanthene ring system, respectively. In the crystal, C-H?O hydrogen-bond contacts connect neighbouring mol-ecules into infinite zigzag chains running parallel to the b axis.eninfo:eu-repo/semantics/openAccesssingle-crystal X-ray studyT = 296 Kmean (C–C) = 0.002 AR factor = 0.045wR factor = 0.098data-to-parameter ratio = 17.5Article70