N′-[(E)-1-(5-Chloro-2-hydroxyphenyl)ethylidene]pyridine-3-carbohydrazide monohydrate
نویسندگان
چکیده
In the title compound, C(14)H(12)ClN(3)O(2)·H(2)O, the benzene ring and the pyridine rings are oriented at a dihedral angle of 57.73 (12)° and an intra-molecular O-H⋯N hydrogen bond generates an S(6) ring. In the crystal, the water mol-ecule forms O-H⋯O and O-H⋯N hydrogen bonds to the organic mol-ecule, leading to chains containing R(4) (4)(16) loops. In addition, weak aromatic π-π stacking inter-actions between the centroids of pyridine rings [at distance of 3.864 (2) and 4.013 (2) Å] and C-H⋯π inter-actions occur.
منابع مشابه
N′-[1-(5-Bromo-2-hydroxyphenyl)ethylidene]isonicotinohydrazide monohydrate: crystal structure and Hirshfeld surface analysis
In the title isonicotinohydrazide hydrate, C14H12BrN3O2·H2O {systematic name: N'-[(1E)-1-(5-bromo-2-hy-droxy-phen-yl)ethyl-idene]pyridine-4-carbohydrazide monohydrate}, the central CN2O region of the organic mol-ecule is planar and the conformation about the imine-C=N bond is E. While an intra-molecular hy-droxy-O-H⋯N(imine) hydrogen bond is evident, the dihedral angle between the central resid...
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The title compound, C(13)H(12)N(2)O(2)S, was prepared by the reaction of 1-(2-hy-droxy-phen-yl)ethanone and thio-phene-2-carbohydrazide. The dihedral angle between the benzene and thio-phene rings is 10.07 (17)°. An intra-molecular O-H⋯N hydrogen bond may influence the mol-ecular conformation. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds into chains along [010].
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In the Schiff base mol-ecule of the title compound, C(20)H(14)ClN(3)O(3)·CH(3)COOH·H(2)O, the central benzene ring makes dihedral angles of 36.26 (7) and 27.59 (8)°, respectively, with the terminal chloro-phenyl and pyridine rings. In the crystal, the three components are linked by O-H⋯O, N-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds into a double-tape structure along the a axis.
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The title compound, C13H12N4O2, crystallized with two independent mol-ecules (A and B) in the asymmetric unit. Mol-ecule B is planar to within 0.044 (3) Å for all non-H atoms, while mol-ecule A is slightly twisted, with a dihedral angle of 6.29 (4)° between the mean planes of the pyrazine-2-carbohydrazide and 1-(2-hy-droxy-phen-yl)ethanone moieties (r.m.s. deviations = 0.0348 and 0.0428 Å, resp...
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The title compound, C(15)H(12)BrClN(2)O(2), was synthesized by the condensation of 1-(5-bromo-2-hy-droxy-phen-yl)ethanone with 2-chloro-benzohydrazide in anhydrous ethanol. The Schiff base mol-ecule displays a trans configuration with respect to the C=N double bond. The dihedral angle between the two benzene rings is 13.74 (3)°. The mol-ecular conformation is stabilized by an intra-molecular O-...
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