(E)-4-Bromo-N′-(2-hydroxy-1-naphthylmethylene)benzohydrazide
نویسندگان
چکیده
The title compound, C(18)H(13)BrN(2)O(2), was synthesized by the reaction of 2-hydr-oxy-1-naphthaldehyde with 4-bromo-benzohydrazide. This Schiff base mol-ecule has an E configuration about the C=N bond and is almost planar, the dihedral angle between the mean planes through the substituted benzene ring and the naphthyl system being 6.6 (2)°. There is an intra-molecular O-H⋯N hydrogen bond involving the naphthyl hydr-oxy substituent and the N' atom of the hydrazide group. In the crystal structure, mol-ecules are linked through inter-molecular N--H⋯O hydrogen bonds to form chains extending along the b direction.
منابع مشابه
(E)-2-Chloro-N′-(2-hydroxy-1-naphthylmethylene)benzohydrazide
In the structue of the title compound, C(18)H(13)ClN(2)O(2), a new Schiff base, the dihedral angle between the benzene and naphthyl ring system mean planes is 22.5 (2)°. The mol-ecule has an E configuration about the C=N bond, and an intra-molecular hydrogen bond involving the hydoxyl substituent on the naphthyl ring and the N' atom of the hydrazide. The crystal structure is stabilized by inter...
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The title compound, C(14)H(10)BrN(3)O(4), was synthesized by the reaction of 4-hydr-oxy-3-nitro-benzaldehyde with an equimolar quantity of 3-bromo-benzohydrazide in methanol. The mol-ecule displays an E configuration about the C=N bond. The dihedral angle between the two benzene rings is 4.6 (2)°. The nitro group is almost coplanar with the attached benzene ring [dihedral angle = 4.7 (2)°]. In ...
متن کامل(E)-3-Bromo-N′-(2-hydroxy-1-naphthylidene)benzohydrazide
The title compound, C(18)H(13)BrN(2)O(2), was synthesized by the reaction of 2-hydr-oxy-1-naphthaldehyde with an equimolar quantity of 3-bromo-benzohydrazide in methanol. The dihedral angle between the benzene ring and the naphthyl ring system is 18.3 (2)°. An intra-molecular O-H⋯N hydrogen bond is observed between the phenolate O and imine N atoms. In the crystal structure, mol-ecules are link...
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The title compound, C(15)H(14)N(2)O(3), was synthesized by the reaction of 4-methoxy-benzaldehyde with 4-hydroxy-benzohydrazide in methanol. The mol-ecule adopts an E configuration about the C=N bond. The two benzene rings make a dihedral angle of 46.6 (2)°. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to (001) through O-H⋯O and N-H⋯O hydrogen bonds.
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