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3-Methoxy-benzohydrazide.

ABSTRACT: The title compound, C(8)H(10)N(2)O(2), crystallizes with two independent mol-ecules in an asymmetric unit. The structure is stabilized by nine inter-molecular N-H?N, N-H?O and C-H?O hydrogen bonds.

SUBMITTER: Jamal RA

PROVIDER: S-EPMC2970484 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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3-Methoxy-benzohydrazide.

Jamal Rifat Ara RA Ashiq Uzma U Arshad Muhammad Nadeem MN Maqsood Zahida Tasneem ZT Khan Islam Ullah IU

Acta crystallographica. Section E, Structure reports online 20090916 Pt 10

The title compound, C(8)H(10)N(2)O(2), crystallizes with two independent mol-ecules in an asymmetric unit. The structure is stabilized by nine inter-molecular N-H⋯N, N-H⋯O and C-H⋯O hydrogen bonds. ...[more]

PMID: 21577925

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4-Methoxy-benzohydrazide.

Project description:The title compound, C(8)H(10)N(2)O(2), is stabilized by three inter-molecular hydrogen bonds of the N-H?O and N-H?N types. Two intra-molecular inter-actions of the N-H?O and C-H?O types are also observed.

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2-Methoxy-benzohydrazide.

Project description:The title compound, C(8)H(10)N(2)O(2), crystallizes as two independent mol-ecules linked by N-H?N and N-H?O hydrogen bonds into a linear chain running along the a axis of the monoclinic unit cell. The intra- and inter-molecular hydrogen bonds are described as a two-ring R(2) (2)(10) motif. The six-membered R(1) (1)(6) rings formed by the intra-molecular inter-actions are almost planar (r.m.s. deviations 0.06 and 0.08?Å). In one mol-ecule, the aromatic and hydrogen-bonded rings are oriented at 4.8?(2)°, whereas in the other mol-ecule these rings are oriented at 6.1?(4)°.

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N'-(2-Hydr-oxy-4-methoxy-benzyl-idene)-4-methoxy-benzohydrazide.

Project description:In the title compound, C(16)H(16)N(2)O(4), the dihedral angle between the two benzene rings is 8.7?(2)°. The mol-ecule adopts an E configuration about the C=N bond, with an intra-molecular O-H?N hydrogen bond involving the hydr-oxy substituent and the hydrazide N atom. In the crystal structure, adjacent mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains propagating in the b-axis direction.

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(E)-N'-(5-Bromo-2-methoxy-benzyl-idene)-3-methoxy-benzohydrazide.

Project description:In the title compound, C(16)H(15)BrN(2)O(3), there are two independent mol-ecules (A and B) in the asymmetric unit. The major difference between the two mol-ecules is the dihedral angle formed by the aromatic rings [72.6 (2) and 18.8 (2)° for A and B, respectively]. The benzohydrazide groups are not planar and the mol-ecules exist in trans configurations with respect to the methyl-idene units. The mol-ecular packing is stabilized by two inter-molecular N-H⋯O hydrogen bonds, forming chains parallel to the c axis. Only the A mol-ecules of the asymmetric unit are held together by π-π inter-actions [centroid-centroid distance = 3.714 (3) Å].

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(E)-N'-(5-Bromo-2-methoxy-benzyl-idene)-4-methoxy-benzohydrazide.

Project description:In the title compound, C(16)H(15)BrN(2)O(3), the benzohydrazide group is not planar and the mol-ecule exists in a trans configuration with respect to the methyl-idene unit. The dihedral angle between the two substituted benzene rings is 75.6 (2)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds involving carbonyl and amine functionalities, to form chains parallel to the c cell axis.

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(E)-N'-(4-Methoxy-benzyl-idene)benzohydrazide.

Project description:In the title mol-ecule, C(15)H(14)N(2)O(2), the dihedral angle between the benzene rings is 5.93?(17)°. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into chains propagating in [010].

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N'-(4-Hydr-oxy-3-methoxy-benzyl-idene)-4-methoxy-benzohydrazide monohydrate.

Project description:In the title compound, C(16)H(16)N(2)O(4)·H(2)O, the dihedral angle between the two aromatic rings is 19.6 (2)°. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds.

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N'-(2,4-Dichloro-benzyl-idene)-3-methoxy-benzohydrazide.

Project description:There are two independent mol-ecules in the asymmetric unit of the title compound, C(15)H(12)Cl(2)N(2)O(2). The dihedral angle between the two benzene rings is 27.6?(4)° in one mol-ecule and 16.4?(4)° in the other. Both mol-ecules adopt an E configuration about the C=N bonds. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains in the a-axis direction.

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4-Chloro-N'-(2-methoxy-benzyl-idene)benzohydrazide.

Project description:The title compound, C(15)H(13)ClN(2)O(2), was prepared by the reaction of 3-methoxy-benzaldehyde and 4-chloro-benzo-hydrazide in methanol. The asymmetric unit consists of two unique molecules, which are linked together in the form of a cross by N-H⋯O and N-H⋯N hydrogen bonds. The dihedral angles between the two benzene rings in the mol-ecules are 77.3 (1) and 44.1 (1)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the a axis.

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N'-(2-Hydroxy-benzyl-idene)-4-methoxy-benzohydrazide.

Project description:The title Schiff base compound, C(15)H(14)N(2)O(3), was derived from the condensation reaction of salicylaldehyde with 4-methoxy-benzohydrazide. The dihedral angle between the two benzene rings is 2.5 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the b axis.

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