Yalçın Serife Pınar, Akkurt Mehmet, Jarrahpour Aliasghar, Ebrahimi Edris, Büyükgüngör Orhan
Acta Crystallogr Sect E Struct Rep Online. 2009 Feb 28;65(Pt 3):o626-7. doi: 10.1107/S1600536809005200.
The stabilized conformation of the title compound, C(36)H(25)NO(3), 4-(9-anthryl)-1-(2-methoxyphenyl)-spiro[azetid-in-3,9'-xanthen]-2-one, may be compared with that of the isomeric compound 4-(9-anthr-yl)-1-(4-methoxy-phen-yl)spiro-[azetidin-3,9'-xanthen]-2-one. In the title isomer, the meth-oxy group is slightly twisted out of the plane of the attached benzene ring, with a C-O-C-C torsion angle of 31.5 (2)°. Its β-lactam ring is essentially planar, with a maximum deviation of -0.021 (1) Å. The β-lactam ring makes dihedral angles of 18.815 (9), 83.33 (7) and 53.62 (8)° with the mean planes of the benzene, xanthene and anthracene ring systems, respectively. The structure is stabilized by C-H⋯π, C-H⋯N and C-H⋯O inter-actions.
标题化合物C(36)H(25)NO(3)，即4-(9-蒽基)-1-(2-甲氧基苯基)-螺[氮杂环丁烷-3,9'-呫吨]-2-酮的稳定构象，可与异构体化合物4-(9-蒽基)-1-(4-甲氧基苯基)螺[氮杂环丁烷-3,9'-呫吨]-2-酮的构象进行比较。在标题异构体中，甲氧基略微扭曲出相连苯环的平面，C-O-C-C扭转角为31.5 (2)°。其β-内酰胺环基本呈平面状，最大偏差为-0.021 (1) Å。β-内酰胺环与苯、呫吨和蒽环系统的平均平面分别形成18.815 (9)°、83.33 (7)°和53.62 (8)°的二面角。该结构通过C-H⋯π、C-H⋯N和C-H⋯O相互作用得以稳定。
