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    A new polymorph of N-(2-{N′-[(1E)-2-hy­dr­oxy­benzyl­­idene]hydrazinecarbon­yl}phen­yl)benzamide

    Mohamed, SK, Mague, JT, Akkurt, M, Potgieter, H and Albayati, MR (2014) A new polymorph of N-(2-{N′-[(1E)-2-hy­dr­oxy­benzyl­­idene]hydrazinecarbon­yl}phen­yl)benzamide. Acta Crystallographica Section E: Crystallographic Communications, 70 (6). ISSN 2056-9890


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    The title compound, C 21 H 17 N 3 O 3 , is a new polymorph of an already published structure [Shashidhar et al. (2006). Acta Cryst. E62, o4473-o4475]. The previously reported structure crystallizes in the monoclinic space group C2/c, whereas the structure reported here is in the tetragonal space group I4 1 /a. The bond lengths and angles are similar in both structures. The molecule adopts an extended conformation via intramolecular N-H⋯O and O-H⋯N hydrogen bonds; the terminal phenyl ring and the hydroxylphenyl ring are twisted with respect to the central benzene ring by 44.43 (7) and 21.99 (8)°, respectively. In the crystal, molecules are linked by N-H⋯O hydrogen bonds, weak C-H⋯O hydrogen bonds and weak C-H⋯π interactions into a three-dimensional supramolecular network.

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