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Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):o1101-2. doi: 10.1107/S1600536811013018. Epub 2011 Apr 13.



In the title compound, C(22)H(17)ClN(2)O(5), the nearly planar four-membered β-lactam ring [maximum deviation of 0.016 (1) for the N atom] makes dihedral angles of 53.07 (9), 73.19 (9) and 6.61 (9)° with the chloro-, nitro- and meth-oxy-benzene rings, respectively. The crystal structure is stabilized by C-H⋯O hydrogen bonds, a weak C-H⋯π inter-action and a π-π stacking inter-action [centroid-centroid distance = 3.6513 (8) Å] between the meth-oxy-benzene rings of inversion-related mol-ecules.

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