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(1Z,2E)-N'-{2-Chloro-1-methyl-2-[2-(4-methyl-phen-yl)hydrazin-1-yl-idene]ethyl-idene}-4-meth-oxy-benzohydrazide.

ABSTRACT: The asymmetric unit of the title compound, C(18)H(19)ClN(4)O(2), contains two mol-ecules, in which the dihedral angles between the benzene rings are 43.60 (12) and 58.65 (13)°. The hydrazine N atoms are twisted slightly out of the planes of the tolyl and meth-oxy-benzene rings: the C-C-N-N and N-N-C-C torsion angles are 171.1 (2) and -174.4 (2)°, respectively, for one mol-ecule and -177.4 (2) and -170.6 (2)°, respectively, for the other. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯O hydrogen bonds into chains propagating along the b-axis direction.

SUBMITTER: Abdel-Aziz HA

PROVIDER: S-EPMC3343910 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature

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(1Z,2E)-N'-{2-Chloro-1-methyl-2-[2-(4-methyl-phen-yl)hydrazin-1-yl-idene]ethyl-idene}-4-meth-oxy-benzohydrazide.

Abdel-Aziz Hatem A HA Ghabbour Hazem A HA Hemamalini Madhukar M Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20120303 Pt 4

The asymmetric unit of the title compound, C(18)H(19)ClN(4)O(2), contains two mol-ecules, in which the dihedral angles between the benzene rings are 43.60 (12) and 58.65 (13)°. The hydrazine N atoms are twisted slightly out of the planes of the tolyl and meth-oxy-benzene rings: the C-C-N-N and N-N-C-C torsion angles are 171.1 (2) and -174.4 (2)°, respectively, for one mol-ecule and -177.4 (2) and -170.6 (2)°, respectively, for the other. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯O h ...[more]

PMID: 22589991

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(1Z,2E)-N'-{1-[2-(4-Bromo-phen-yl)hydrazin-1-yl-idene]-1-chloro-propan-2-yl-idene}thio-phene-2-carbohydrazide.

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Project description:In the title compound, C(14)H(13)ClO(5), the five-membered ring is in an envelope conformation with the methyl-ene C-atom being the flap. The conformation about the C=C double bond [1.341 (2) Å] is E. The chloro-propan-2-one residue is approximately orthogonal to the remaining mol-ecule [dihedral angle = 88.03 (6)°]. In the crystal, the mol-ecules associate via C-H⋯O inter-actions, involving both carbonyl-O atoms, giving rise to an undulating two-dimensional array in the ac plane.

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(2E)-2-[2-(4-Chloro-phen-yl)hydrazin-1-yl-idene]-4,4,4-trifluoro-3-oxobutanal.

Project description:The title compound, C(10)H(6)ClF(3)N(2)O(2), was synthesized by coupling 4-dimethyl-amino-1,1,1-trifluoro-but-3-en-2-one with 4-chloro-benzene-diazo-nium chloride. It crystallizes with two mol-ecules in the asymmetric unit, which form two similar centrosymmetric dimers via hydrogen bonds. Extensive electron delocalization and intra-molecular N-H⋯O hydrogen bonds are responsible for a planar conformation of the mol-ecules (maximum deviations = 0.010 and -0.015 Å for the two molecules). In addition to hydrogen bonds, π-π stacking inter-actions with centroid-centroid distances of 3.604 (2) and 3.583 (2) Å contribute to the stability of the crystal structure.

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