title: (E)-N'-(3-Bromo-5-chloro-2-hy-droxy-benzyl-idene)nicotinohydrazide.
abstract: There are two independent mol-ecules in the asymmetric unit of the title compound, C(13)H(9)BrClN(3)O(2), in which the dihedral angles between the benzene and pyridine rings are 8.23 (9)° and 52.84 (12)°. Both the mol-ecules exist in an E configuration with respect to the C=N double bond. The two mol-ecules in the asymmetric unit are linked via weak C-H⋯O hydrogen bonds. In both the mol-ecules, an intra-molecular O-H⋯N hydrogen bond generate an S(6) graph-set motif. In the crystal, inter-molecular N-H⋯O and C-H⋯O hydrogen bonds generate bifurcated R(1) (2)(7) ring motifs. The crystal packing is further stabilized by weak inter-molecular N-H⋯O, N-H⋯N, C-H⋯O and π-π [centroid-centroid distance 3.615 (2) Å] inter-actions.
authors: M
authors: M
authors: Prabhu
authors: K
authors: K
authors: Parthipan
authors: A
authors: A
authors: Ramu
authors: G
authors: G
authors: Chakkaravarthi
authors: G
authors: G
authors: Rajagopal