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(E)-N'-(2,3,4-Trimethoxy-benzyl-idene)isonicotinohydrazide.

ABSTRACT: In the title compound, C(16)H(17)N(3)O(4), the mol-ecule exists in an E configuration with respect to the C=N double bond. The mol-ecule is not planar, the dihedral angle between the pyridine and benzene rings being 71.67?(8)°. In the crystal structure, mol-ecules are linked into chains along the b axis by bifurcated N-H?O and C-H?O hydrogen bonds. These chains are linked into a three-dimensional network by C-H?O and C-H?? inter-actions.

SUBMITTER: Naveenkumar HS

PROVIDER: S-EPMC2979288 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature

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(E)-N'-(2,3,4-Trimethoxy-benzyl-idene)isonicotinohydrazide.

Naveenkumar H S HS Sadikun Amirin A Ibrahim Pazilah P Yeap Chin Sing CS Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20100430 Pt 5

In the title compound, C(16)H(17)N(3)O(4), the mol-ecule exists in an E configuration with respect to the C=N double bond. The mol-ecule is not planar, the dihedral angle between the pyridine and benzene rings being 71.67 (8)°. In the crystal structure, mol-ecules are linked into chains along the b axis by bifurcated N-H⋯O and C-H⋯O hydrogen bonds. These chains are linked into a three-dimensional network by C-H⋯O and C-H⋯π inter-actions. ...[more]

PMID: 21579254

Similar Datasets

(E)-N'-(2,4,5-Trimethoxy-benzyl-idene)isonicotinohydrazide dihydrate.

Project description:The asymmetric unit of the title compound, C(16)H(17)N(3)O(4)·2H(2)O, contains one Schiff base mol-ecule and two water mol-ecules. The Schiff base mol-ecule exists in an E configuration with respect to the C=N double bond and is essentially planar, the dihedral angle between the benzene and pyridine rings being 5.48?(8)°. The three meth-oxy groups are also coplanar with the benzene ring [C-O-C-C torsion angles = 3.9?(2), 178.51?(15) and 0.8?(2)?Å]. In the crystal structure, the water mol-ecules link the mol-ecules into a three-dimensional network via inter-molecular N-H?O, O-H?O, O-H?N and C-H?O hydrogen bonds.

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Project description:In the title isoniazid derivative, C(13)H(11)N(3)O(4)·2H(2)O, the Schiff base mol-ecule exists in an E configuration with respect to the acyclic C=N bond. An intra-molecular O-H?N hydrogen bond forms a six-membered ring, producing an S(6) ring motif. The essentially planar pyridine ring [maximum deviation = 0.0119?(8)?Å] is inclined at a dihedral angle of 7.30?(4)° with respect to the benzene ring. In the crystal, inter-molecular O-H?N, O-H?O, N-H?O and C-H?O hydrogen bonds link the mol-ecules into two-dimensional arrays lying parallel to the (10) plane. These arrays are further inter-connected into a three-dimensional extended network via O-H?O and C-H?O hydrogen bonds. A weak inter-molecular ?-? inter-action [centroid-to-centroid distance = 3.5627?(5)?Å] is also observed.

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Project description:The title compound, C(13)H(11)N(3)O(3), crystallized with two independent mol-ecules in the asymmetric unit. One of the mol-ecules is twisted while the other is almost planar, with dihedral angles of 28.02?(6) and 2.42?(9)°, respectively, between the benzene and pyridine rings. Intra-molecular O-H?O and O-H?N hydrogen bonds are present in both mol-ecules. The two independent mol-ecules are linked by pairs of O-H?O hydrogen bonds. The crystal structure is further stabilized by inter-molecular N-H?N hydrogen bonds and C-H?N and C-H?O inter-actions.

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(E)-N'-(2,4,6-Trimethyl-benzyl-idene)isonicotinohydrazide.

Project description:The title isoniazid derivative, C(16)H(17)N(3)O, exists in an E configuration with respect to the Schiff base C=N bond. The pyridine ring is essentially planar [maximum deviation = 0.009?(3)?Å]. The mean plane through the hydrazide unit forms dihedral angles of 38.38?(16) and 39.42?(16)°, respectively, with the pyridine and benzene rings. In the crystal structure, symmetry-related mol-ecules are linked via inter-molecular N-H?O hydrogen bonds into chains along [100]. The crystal structure is further stabilized by weak inter-molecular C-H?? inter-actions.

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1-(2,3,4-Trihydroxy-benzyl-idene)thio-semicarbazide.

Project description:In the title mol-ecule, C(8)H(9)N(3)O(3)S, the thio-semicarbazide =N-NH-C(=S)-NH- fragment is twist a different degree of twist in the three independent mol-ecules [dihedral angles = 7.6?(1), 11.6?(1) and 20.7?(1)°]. Intra-molecular O-H?N and O-H?O hydrogen bonds occur. In the crystal, the hydr-oxy and amino groups are hydrogen-bond donors and the O-H?O, O-H?S and N-H?O hydrogen bonds generate a layer motif.

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(E)-N'-(4-Isopropyl-benzyl-idene)isonicotinohydrazide monohydrate.

Project description:In the title compound, C(16)H(17)N(3)O·H(2)O, the isonicotinohydrazide mol-ecule adopts an E conformation about the central C=N double bond. The dihedral angle between the pyridine and the benzene rings is 54.56?(15)°. In the crystal, mol-ecules are connected via N-H?O, O-H?N and O-H?O hydrogen bonds, forming a three-dimensional network.

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(E)-N'-(2,4,6-Trihydroxy-benzyl-idene)isonicotinohydrazide sesquihydrate.

Project description:In the title compound, C(13)H(11)N(3)O(4)·1.5H(2)O, the pyridine ring forms a dihedral angle of 1.50?(6)° with the benzene ring. An intra-molecular O-H?N hydrogen bond forms a six-membered ring with an S(6) ring motif. In the crystal structure, one water mol-ecule is disordered over two positions around an inversion centre with site-occupancy factors of 0.5. Inter-molecular O-H?N, O-H?O, N-H?O and C-H?O hydrogen bonds consolidate the structure into a three dimensional network. A ?-? stacking inter-action with a centroid-centroid distance of 3.5949?(7)?Å is also present.

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N'-(2-Chloro-5-nitro-benzyl-idene)isonicotinohydrazide.

Project description:The title compound, C(13)H(9)ClN(4)O(3), was synthesized by the condensation reaction of 2-chloro-5-nitro-benzaldehyde with isonicotinohydrazide in a methanol solution. The mol-ecule of the compound displays a trans configuration with respect to the C=N and C-N bonds. The dihedral angle between the benzene and pyridine rings is 12.1?(2)°. In the crystal structure, adjacent mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming dimers.

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4-Chloro-N-(3,4,5-trimethoxy-benzyl-idene)aniline.

Project description:The title compound, C(16)H(16)ClNO(3), is a Schiff base displaying a trans configuration of the C=N double bond. In the crystal structure, inter-molecular C-H?N and bifurcated C-H?(O,O) hydrogen bonds are observed.

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4-Bromo-N-(3,4,5-trimethoxy-benzyl-idene)aniline.

Project description:The title compound, C(16)H(16)BrNO(3), adopts an E configuration with respect to the imine C=N bond. The two benzene rings are twisted with respect to each other at an angle of 38.3?(1)°. In the crystal structure, mol-ecules are connected by weak bifurcated C-H?(O, O) hydrogen bonds, forming a helical chain along the b axis.

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