title: N'-(5-Bromo-2-hydr-oxy-3-methoxy-benzyl-idene)-4-hydr-oxy-3-methoxy-benzohydrazide dihydrate.
abstract: In the title compound, C(16)H(15)BrN(2)O(5)·2H(2)O, the dihedral angle between the two aromatic rings is 2.9 (2)° and an intra-molecular O-H⋯N hydrogen bond is observed. One of the water mol-ecule is disordered over two positions, with occupancies of 0.83 (3) and 0.17 (3). In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-H⋯O, O-H⋯(O,O), O-H⋯N and N-H⋯O hydrogen bonds. π-π inter-actions involving Br-substituted benzene rings, with a centroid-centroid distance of 3.552 (3) Å are also observed.
authors.forename: Jiu-Fu
authors.initials: JF
authors.lastname: Lu
authors.forename: Suo-Tian
authors.initials: ST
authors.lastname: Min
authors.forename: Hong-Guang
authors.initials: HG
authors.lastname: Ge
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Ji
authors.forename: Yue-Fei
authors.initials: YF
authors.lastname: Bai