Pojarová Michaela, Dušek Michal, Sedláková Zdeňka, Makrlík Emanuel
Acta Crystallogr Sect E Struct Rep Online. 2012 Jun 1;68(Pt 6):o1698-9. doi: 10.1107/S1600536812020351. Epub 2012 May 12.
In the crystal structure of the title compound, C(19)H(18)Cl(2)N(2)O(4), N-H⋯O hydrogen bonds link the mol-ecules into infinite chains along the b axis. The structure also features weak C-H⋯O and C-H⋯Cl hydrogen bonds and C-H⋯π and (lone pair)⋯π inter-actions [Cl⋯centroid = 3.5871 (7) Å]. An intra-molecular N-H⋯O bond occurs.