(<i>E</i>)-2-Hydroxy-<i>N</i>′-[1-(4-methoxyphenyl)ethylidene]benzohydrazide

Qiu, Xiao‐Yang; Luo, Qiu‐Yan; Yang, Sen-Lin; Liu, Weisheng

doi:10.1107/s1600536806029345

Cited by 8 publications

(8 citation statements)

References 2 publications

(2 reference statements)

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“…Recently, we have reported a few hydrazone compounds [4][5][6]. The title crystal structure consists of a Schiff base molecule and a methanol molecule.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of 4-hydroxy-3-methoxy-N'-(5-chloro-2-hydroxybenzylidene) benzohydrazide – methanol (1:1), C15H13CIN2O4CH3OH

Qiu¹

2009

Zeitschrift Für Kristallographie - New Crystal Structures

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“…Recently, we have reported a few hydrazone compounds [4][5][6]. The title crystal structure consists of a Schiff base molecule and a methanol molecule.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of 4-hydroxy-3-methoxy-N'-(5-chloro-2-hydroxybenzylidene) benzohydrazide – methanol (1:1), C15H13CIN2O4CH3OH

Qiu¹

2009

Zeitschrift Für Kristallographie - New Crystal Structures

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“…Recently, we have reported af ew hydrazone compounds [4][5][6]. The title crystal structure consists of aSchiff base molecule and a methanol molecule.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of 4-hydroxy-3-methoxy-N’-(5-chloro-2-hydroxy-benzylidene) benzohydrazide—methanol (1:1), C15H13ClN2O4·CH3OH

Qiu¹

2009

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialThe title compound was prepared by the Schiff base condensation of equimolar (0.5 mmol each) solutions of 5-chlorosalicylaldehyde and 4-hydroxy-3-methoxybenzohydrazide in methanol (20 ml). Excess methanol was removed from the reaction mixture by distillation. The colourless solid was filtered and dried in air. Colourless block-shaped crystals suitable for X-ray diffraction were obtained from amethanol solution. Experimental detailsThe imino Hatom was located in adifference map and refined with N-H distance restrained to 0.90(1) Å.T he remaining H atoms were positioned geometrically82 Å]and refined using ariding model, with U iso (H) =1.2 U eq (C) and 1.5 U eq (C methyl and O). Rotating group models were used for the methyl groups. DiscussionHyrazone compounds, obtained from the reaction of aldehydes with hydrazides, have been widely studied due to their excellent biological properties [1][2][3]. Recently, we have reported af ew hydrazone compounds [4][5][6]. The title crystal structure consists of aSchiff base molecule and a methanol molecule. The Schiff base molecule has a trans configuration with respect to the methylidene group. The dihedral angle between the two phenyl rings is 2.5(2)°, indicating an early coplanar configuration of the molecule. The bond lengths and angles in the compound are found to have normal values and comparable to the values in the similar compounds [7][8][9]. The methanol molecules are linked to the Schiff base molecules through intraand intermolecular N−H···O and O−H···O hydrogen bonds. The molecules are linked into two-dimensional layers parallel to the bc plane by intermolecular O−H···O hydrogen bonds.

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“…Hydrazone compounds, which derived from the reaction of aldehydes with hydrazides, have been widely studied due to their excellent biological properties [1][2][3][4][5][6]. The crystal structure of the title compound consists of aSchiff base molecule and amethanol molecule of crystallization.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of 4-hydroxy-3-methoxy-N'-(2-hydroxy- naphthylidene) benzohydrazide methanol solvate, C19H16N2O4 ·CH3OH

Qiu¹

2008

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialThe title compound was prepared by the Schiff base condensation of equimolar (0.5 mmol each) 2-hydroxy-1-naphthylaldehyde and 4-hydroxy-3-methoxybenzohydrazide in methanol (20 ml). Excess methanol was removed from the reaction mixture with distillation. The colorless solid was filtered and dried in air. Colorless block-shaped crystals suitable for X-ray diffraction were obtained from amethanol solution. and refined using ariding model, with U iso(H) =1.2 U eq (C) and 1.5 U eq (C methyl and O). Rotating group models were used for the methyl groups. Experimental details DiscussionHydrazone compounds, which derived from the reaction of aldehydes with hydrazides, have been widely studied due to their excellent biological properties [1][2][3][4][5][6]. The crystal structure of the title compound consists of aSchiff base molecule and amethanol molecule of crystallization. The Schiff base molecule is in a trans configuration with respect to the methylidene group. The dihedral angle between the phenyl ring and the naphthyl ring is 1.5(2)°, indicating anearly planar configuration of the molecule. The bond lengths and angles in the compound are found to have normal values and comparable to the values in the similar compounds [7][8][9]. The methanol molecules are linked to the Schiff base molecules through intermolecular N−H···O and O−H···O hydrogen bonds. In the crystal structure, molecules are linked by intermolecular O−H···O and N−H···O hydrogen bonds into wave-shaped twodimensional layers parallel to (010).

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(E)-2-Hydroxy-N′-[1-(4-methoxyphenyl)ethylidene]benzohydrazide

Abstract: Key indicatorsSingle-crystal X-ray study T = 298 K Mean (C-C) = 0.003 Å R factor = 0.035 wR factor = 0.102 Data-to-parameter ratio = 10.3For details of how these key indicators were automatically derived from the article, see

Cited by 8 publications

References 2 publications

Crystal structure of 4-hydroxy-3-methoxy-N'-(5-chloro-2-hydroxybenzylidene) benzohydrazide – methanol (1:1), C15H13CIN2O4CH3OH

Crystal structure of 4-hydroxy-3-methoxy-N'-(5-chloro-2-hydroxybenzylidene) benzohydrazide – methanol (1:1), C15H13CIN2O4CH3OH

Crystal structure of 4-hydroxy-3-methoxy-N’-(5-chloro-2-hydroxy-benzylidene) benzohydrazide—methanol (1:1), C15H13ClN2O4·CH3OH

Crystal structure of 4-hydroxy-3-methoxy-N'-(2-hydroxy- naphthylidene) benzohydrazide methanol solvate, C19H16N2O4 ·CH3OH

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