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(E,E)-4-Hydr­oxy-3-methoxy­benzaldehyde azine

✍ Scribed by Qu, Yang ;Sun, Xian-Ming

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
356 KB
Volume
61
Category
Article
ISSN
1600-5368

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4-Hydr­oxy-3-methoxy­benzaldehyde nicoti
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The asymmetric unit of the title compound, C~14~H~13~N~3~O~3~·H~2~O, consists of one 4-hydroxy-3-methoxybenzaldehyde nicotinoylhydrazone (NAHZ) molecule and one water molecule linked through hydrogen bonds.

3-Hydr­oxy-4-methoxy­benzaldehyde isonic
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✍ Liu, Hui-Min ;Zhang, Wen-Qin 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 220 KB

The asymmetric unit of the title compound, C 14 H 13 N 3 O 3 ÁH 2 O, consists of one isonicotinic acid (3-hydroxy-4-methoxybenzylidene)hydrazide (IBH) molecule and one water molecule connected through an O-HÁ Á ÁO hydrogen bond. Further O-HÁ Á ÁO, O-HÁ Á ÁN and N-HÁ Á ÁO hydrogen bonds result in the

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(E)-5-[(3-Bromo­phen­yl)diazen­yl]-2-hydr­oxy-3-methoxy­benzaldehyde
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The title structure, C 14 H 11 BrN 2 O 3 , displays the characteristic features of azobenzene derivatives. The two aromatic rings are nearly coplanar, forming a dihedral angle of 8.71 (12) . There is a strong intramolecular O-HÁ Á ÁO bond, and weakand C-HÁ Á Á interactions stabilize the structure.