Abstract
Crystals of the title compound, C(12)H(8)Cl(2)N(2)O(2), were obtained by slow evaporation of an ethano-lic solution. An intra-molecular (amide)N-H⋯O=C(lactam) hydrogen bond is observed. In the crystal, two mol-ecules pair up to form a centrosymmetric lactam-lactam dimers (LLD) by N-H⋯O=C hydrogen bonds, whereas the O=C(amide) group of the mol-ecule does not participate in hydrogen bonding.