Sladjana B. Novaković, Goran A. Bogdanović, Shaaban K. Mohamed
Sep 8, 2012
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
In the crystal structure of the title compound, 2C10H7NO4·C14H13N3O2, the two independent acid molecules are connected through strong O—H⋯N and O—H⋯O hydrogen bonds to the central molecule of the antitubercular drug N′-[(E)-4-methoxybenzylidene]pyridine-4-carbohydrazide. Two such trimolecular units related by an inversion centre interact through a pair of N—H⋯O hydrogen bonds, forming a 3 + 3 molecular aggregate. The dihedral angle between the aromatic rings of the hydrazone molecule is 1.99 (12)°. The crystal packing features weak C—H⋯O and π–π stacking interactions, with centroid–centroid distances of 3.8460 (19) and 3.8703 (13) Å.