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N'-(4-Diethyl-amino-2-hy-droxy-benzyl-idene)-4-(dimethyl-amino)-benzo-hydrazide methanol monosolvate.

ABSTRACT: The title compound, C(20)H(26)N(4)O(2)·CH(3)OH, was prepared by the reaction of 4-diethyl-amino-2-hy-droxy-benzaldehyde with 4-(dimethyl-amino)-benzohydrazide. The dihedral angle between the two benzene rings is 13.6 (3)° and an intra-molecular O-H⋯N hydrogen bond generates an S(6) ring. In the crystal, the hydrazone and methanol mol-ecules are linked through inter-molecular O-H⋯O and N-H⋯O hydrogen bonds, forming chains along a.

SUBMITTER: Su F

PROVIDER: S-EPMC3151952 | biostudies-literature |

REPOSITORIES: biostudies-literature

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N'-(2-Bromo-5-hy-droxy-4-meth-oxy-benzyl-idene)-3,5-dihy-droxy-benzo-hydrazide methanol monosolvate.

Project description:In the crystal structure of the title compound, C(15)H(13)BrN(2)O(5)·CH(3)OH, the methanol solvent mol-ecule links symmetry-related mol-ecules through O-H?O and N-H?O hydrogen bonds. Further inter-molecular O-H?O hydrogen bonds link symmetry-related mol-ecules, leading to the formation of a three-dimensional network. Two of the H atoms involved in hydrogen bonding are disordered. The dihedral angle between the rings is 5.64?(14)°.

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4-Dimethyl-amino-N'-(2-hy-droxy-4-meth-oxy-benzyl-idene)benzohydrazide methanol monosolvate.

Project description:The asymmetric unit of the title compound, C(17)H(19)N(3)O(3)·CH(4)O, comprises two Schiff base mol-ecules and two methanol solvent mol-ecules. The Schiff base mol-ecules are approximately planar, with r.m.s. deviations from the planes defined by the non-H atoms of 0.107 and 0.154?Å, and with dihedral angles between the benzene rings of 4.49?(15) and 8.39?(15)°, respectively. This near-planarity is assisted by the formation of intra-molecular O-H?N hydrogen bonds in each mol-ecule. In the crystal, the components are linked by N-H?O and O-H?O hydrogen bonds to form chains along [010].

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(E)-4-[(4-Diethyl-amino-2-hy-droxy-benzyl-idene)amino]-benzonitrile.

Project description:The title compound, C(18)H(19)N(3)O, displays an E conformation with respect to the C=N double bond. The dihedral angle between the mean planes of the two benzene rings is 24.49 (3)°. An intra-molecular O-H⋯N hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked by nonclassical inter-molecular C-H⋯O hydrogen bonds to form an infinite one-dimensional chain along [010], generating a C(8) motif.

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2-[(E)-4-Diethyl-amino-2-hy-droxy-benzyl-idene]hydrazinecarboxamide.

Project description:Two mol-ecules make up the asymmetric unit of the title compound, C(12)H(18)N(4)O(2), and both feature an intra-molecular O-H?N hydrogen bond, which generates an S(6) ring. The diethyl-amino group of one of the mol-ecules is disordered over two sets of sites in a 0.59?(2):0.41?(2) ratio. In the crystal, N-H?O hydrogen bonds link the mol-ecules into sheets lying parallel to the ac plane and C-H?? inter-actions are also observed.

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3-Chloro-N'-(3,5-dibromo-2-hy-droxy-benzyl-idene)benzohydrazide methanol monosolvate.

Project description:The title Schiff base compound, C(14)H(9)Br(2)ClN(2)O(2)·CH(3)OH, features an intra-molecular O-H⋯N hydrogen bond, which contributes to the planarity of the mol-ecule: the dihedral angle between the two benzene rings is 4.6 (2)°. In the crystal, pairs of adjacent mol-ecules are linked through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, forming dimers. The methanol solvent mol-ecule is linked by inter-molecular O-H⋯O hydrogen bonds.

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Project description:The title compound, C(14)H(9)Br(2)N(3)O(4)·CH(4)O, was obtained as the product of the reaction of 3,5-dibromo-salicyl-aldehyde with 4-nitro-benzohydrazide in methanol. The benzohydrazide mol-ecule is nearly planar, with a maximum deviation of 0.126 (2) Å. The mean planes of the two benzene rings make a dihedral angle of 9.3 (3)°. Intra-molecular O-H⋯N and O-H⋯Br inter-actions are observed in the benzohydrazide mol-ecule. In the crystal, pairs of adjacent benzohydrazide mol-ecules are linked by two methanol mol-ecules through inter-molecular O-H⋯O and N-H⋯O hydrogen bonds, forming a dimer.

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N'-(5-Bromo-2-hy-droxy-benzyl-idene)-4-nitro-benzohydrazide methanol monosolvate.

Project description:In the title compound, C(14)H(10)BrN(3)O(4)·CH(4)O, the benzohydrazide mol-ecule is nearly planar [maximum deviation = 0.110 (2) Å]. The mean planes of the two benzene rings make a dihedral angle of 8.4 (3)°. In the benzohydrazide mol-ecule, there is an intra-molecular O-H⋯N hydrogen bond and the NH group is hydrogen bonded to the methanol solvent mol-ecule. In the crystal, inter-molecular O-H⋯O hydrogen bonds involving the methanol solvent mol-ecule link the benzohydrazide mol-ecules to form chains which propagate along the a axis.

| S-EPMC3213628 | biostudies-literature

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