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Two new carbohydrazone derivatives, N'-(3,5-dibromo-2-hydroxybenzylidene)-2-fluorobenzohydrazide (1), and N'-(4-diethylamino-2-hydroxybenzylidene)-2-fluorobenzohydrazide (2), were prepared by the reaction of 2-fluorobenzohydrazide with 3,5-dibromo-2-hydroxybenzaldehyde and 4-diethylamino-2-hydroxybenzaldehyde, respectively. The compounds were characterized by elemental analyses, infrared spectra, and single crystal X-ray diffraction. The crystal of 1 crystallizes in monoclinic space group C2/c, with unit cell dimensions a = 36.0853(5) A, b = 10.1711(2) A, c = 17.3627(5) A, β = 109.973(2)°, V = 5989.3(2) A3, Z = 16, R1 = 0.0544, wR2 = 0.1300. The crystal of 2 crystallizes in monoclinic space group P2l/c, with unit cell dimensions a = 10.6827(2) A, b = 16.5256(3) A, c = 9.8174(1) A, β = 102.564(2)°, V = 1691.64(5) A3, Z = 4, R1 = 0.0772, wR2 = 0.2156. The compounds were assayed for antibacterial (Bacillus subtilis, Escherichia coli, Pseudomonas fluorescence and Staphylococcus aureus) and antifungal (Aspergillus niger and Candida albicans) activities by MTT method.

journal of the chilean chemical society

SYNTHESIS, MOLECULAR STRUCTURES, AND ANTIMICROBIAL ACTIVITIES OF N'-(3,5-DIBROMO-2-HYDROXYBENZYLIDENE)-2-FLUOROBENZOHYDRAZIDE AND 7V'-(4-DIETHYLAMINO-2-HYDROXYBENZYLIDENE)-2-FLUOROBENZOHYDRAZIDE