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1 Polish Journal of Chemistry

1 2009

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Synthesis, Structures, and Antibacterial Activities of 3-Methoxy-N'-(3-bromo-5-chloro-2-hydroxybenzylidene) benzohydrazide Dimethanol Solvates and 3-Hydroxy-N'-(3-bromo-5-chloro-2-hydroxybenzylidene) benzohydrazide Methanol Solvate

Zhu Q. -Y., Wei Y. -J., Wang F. -W.

Polish Journal of Chemistry

2009

Vol. 83, nr 7

1233-1240

Two Schiff base com pounds, C15H12BrClN2O3×2CH3OH (1) and C14H10BrClN2O3×CH3OH (2), have been synthesized by the condensation reactions of equimolar quantities of 3-bromo-5-chlorosalicylaldehyde with 3-methoxy benzohydrazide and 3-hydroxy - benzohydrazide, respectively, in methanol solutions. Compound (1) consists of a Schiff base molecule and two metha ol molecules of crystallization, while compound (2) con - sists of a Schiff base molecule and one methanol molecule of crystallization. Both com - pounds were characterized by elemental analysis, IR spectra and single-crystal X-ray diffractions. As expected, each Schiff base molecule adopts an E-configuration about the C=N double bond. In both crystal structures, molecules are linked through intermolecular hydrogen bonds and weak Br×××O or Br×××Br interactions, forming layers. Both compounds possess potent antibacterial activities.