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Acta Cryst. (2013). E69, o889
[ doi:10.1107/S1600536813012518 ]


N. Karadayi, Y. Köysal, S. Sahin, E. Coskun and O. Büyükgüngör

Abstract: In the title compound, C19H12Cl2N2O4, the imine bond length of 1.257 (6) Å is typical of a double bond. The dihedral angle between the para-nitro benzene ring and the central benzene ring is 12.06 (3)° and that between the central benzene and the para-chloro benzene ring is 73.81 (2)°. An intramolecular O-H...N hydrogen bond generates an S(6) ring motif. In the crystal, molecules are linked together by two pairs of C-H...O interactions (to the same O atom acceptor), forming inversion dimers. A short Cl...Cl contact [3.232 (4) Å] is observed.

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