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Acta Cryst. (2013). E69, o1535
[ doi:10.1107/S1600536813024537 ]

3,22-Dioxa-11,14-diazapentacyclo[12.8.0.02,11.05,10.015,20]docosa-5(10),6,8,15(20),16,18-hexaene-4,21-dione

X. Ren, J. Feng, J. Wang, B. Liu and B. Yang

Abstract: In the title compound, C18H14N2O4, the piperazine ring adopts a chair conformation and the dihedral angle between the aromatic rings is 13.09 (9)°. In the crystal, molecules are linked along the c axis by C-H...[pi] and N...[pi] [H(N)-centroid distances = 2.8030 (2) and 3.376 (2) Å] interactions between neighbouring molecules.


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