首页> 外文期刊>Journal of chemical crystallography >Synthesis, Crystal Structure and Antibacterial Activity of 5-Bromonicotinic Acid [1-(4-Chlorophenyl)methylidene] hydrazide Monohydrate Methanol Solvate
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Synthesis, Crystal Structure and Antibacterial Activity of 5-Bromonicotinic Acid [1-(4-Chlorophenyl)methylidene] hydrazide Monohydrate Methanol Solvate

机译:5-溴烟酸[1-(4-氯苯基)亚甲基]酰肼一水合物甲醇溶剂化物的合成,晶体结构和抑菌活性

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The compound 5-bromonicotinic acid [1-(4-chlorophenyl)methylidene]hydrazide monohydrate methanol solvate, derived from the condensation reaction of 5-bromonicotinic acid hydrazide with 4-chlorobenzaldehyde in a methanol solution, was synthesized and characterized by elemental analysis, IR spectrum, H-1 NMR and X-ray single crystal determination. The compound crystallizes in the triclinic space group P - 1 with unit cell dimensions a = 6.9360(14) angstrom, b = 10.070(2) angstrom, c = 12.267(3) angstrom, alpha = 84.39(3)degrees, beta = 86.10(3)degrees, gamma = 80.50(3)degrees, V = 839.8(3) angstrom(3), Z = 2, R-1 = 0.0724, and wR(2) = 0.1720. X-ray structure determination reveals that the compound has a trans configuration with respect to the C=N double bond or C-N single bond. In the crystal structure, molecules are linked through intermolecular O-H center dot center dot center dot N, O-H center dot center dot center dot O, and C-H center dot center dot center dot O hydrogen bonds, forming layers parallel to the ab plane. The preliminary biological tests show that the compound has excellent antibacterial activity.
机译:合成了5-溴烟酸[1-(4-氯苯基)亚甲基]酰肼一水合物甲醇溶剂化物,该化合物由5-溴烟酸酰肼与4-氯苯甲醛在甲醇溶液中缩合反应而得,并通过元素分析,IR表征光谱,H-1 NMR和X射线单晶测定。该化合物在三斜晶空间群P-1中结晶,晶胞尺寸为a = 6.9360(14)埃,b = 10.070(2)埃,c = 12.267(3)埃,alpha = 84.39(3)度,beta = 86.10 (3)度,伽玛= 80.50(3)度,V = 839.8(3)埃(3),Z = 2,R-1 = 0.0724,wR(2)= 0.1720。 X射线结构测定表明该化合物相对于C = N双键或C-N单键具有反式构型。在晶体结构中,分子通过分子间的O-H中心点中心点中心点N,O-H中心点中心点中心点O和C-H中心点中心点中心点O氢键连接,形成与ab平面平行的层。初步的生物学测试表明该化合物具有出色的抗菌活性。

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