N′-(5-Bromo-2-hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazide dihydrate
نویسندگان
چکیده
The title compound, C(14)H(11)BrN(2)O(5)·2H(2)O, crystallizes as hydrogen-bonded sheets. The 2-hydr-oxy group on the benzyl-idene group forms an intra-molecular hydrogen bond to the N atom of the C=N double bond. The amino N atom is a hydrogen-bond donor to a water mol-ecule. The hydr-oxy group on the benzohydrazide group is a hydrogen-bond donor to one acceptor site, whereas each water mol-ecule is a hydrogen-bond donor to two acceptor sites.
منابع مشابه
N′-(5-Chloro-2-hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazide dihydrate
The benzohydrazide mol-ecule in the title dihydrate, C(14)H(11)ClN(2)O(5)·2H(2)O, is non-planar, with the two aromatic rings at either side of the -C(=O)-NH-N=CH- unit forming a dihedral angle of 29.7 (2)°. The benzohydrazide mol-ecule is linked to the water mol-ecules by O-H⋯O and N-H⋯O hydrogen bonds, with other O-H⋯O hydrogen bonds leading to a layer structure.
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The benzohydrazide mol-ecule of the title compound, C(14)H(10)BrClN(2)O(5)·CH(3)OH, is non-planar, the two aromatic rings at either side of the -C(=O)-NH-N=CH- unit being twisted by 5.9 (1)°. The benzohydrazide mol-ecule is linked to the solvent mol-ecule by an O-H⋯O hydrogen bond. Mol-ecules are connected by further O-H⋯O hydrogen bonds and an N-H⋯O link into a two-dimensional array.
متن کامل(E)-N′-(5-Bromo-2-hydroxybenzylidene)-3,4,5-trimethoxybenzohydrazide
The mol-ecule of the title compound, C(17)H(17)BrN(2)O(5), assumes an E configuration, with the 5-bromo-2-hydroxy-phenyl and benzohydrazide units located on opposite sites of the C=N double bond. The dihedral angle between the planes of the two benzene rings is 32.48 (15)°. The crystal structure is stabilized by intra-molecular O-H⋯N and inter-molecular N-H⋯O hydrogen bonds.
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The two aromatic parts of the title mol-ecule, C(16)H(12)BrN(3)O(4), are connected through a conjugated -CH=N-NH-C(O)- fragment to furnish an almost planar mol-ecule. Adjacent mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network. An intramolecular O-H⋯O link also occurs.
متن کاملN′-[1-(5-Bromo-2-hydroxyphenyl)ethylidene]-3,4,5-trihydroxybenzohydrazide dimethyl sulfoxide solvate trihydrate
The benzohydrazide mol-ecule in the title compound, C(15)H(13)BrN(2)O(5)·C(2)H(6)OS·3H(2)O, is almost planar with an r.m.s. deviation for the non-H atoms of 0.078 Å. The organic mol-ecules, water and dimethyl sulfoxide solvent mol-ecules are linked by N-H⋯O, O-H⋯O and O-H⋯S inter-molecular hydrogen bonds, forming zigzag chains along the a axis. Intra-molecular O-H⋯O and O-H⋯N hydrogen bonds als...
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