Synthesis, Analysis and Antibacterial Studies of Co(II) and Ni(II) Schiff Base Complexes Derived from 2,4-Dinitrophenylhydrazine and Benzaldehyde

Scholars International Journal of Chemistry and Material Sciences Pub Date : 2023-03-30 DOI:10.36348/sijcms.2023.v06i03.002

S. Y. Hussaini, Maryam Abdulkadir, Najib A. Panda, I. I. Fagge, H. I. Danjaji, S. Sani

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Abstract

The Schiff base ligand has been synthesized by the reaction of ethanolic solution of benzaldehyde and 2,4-dinitrophenylhydrazine. The corresponding metal complexes were obtained by refluxing the chlorides of Co(II) and Ni(II) with the prepared Schiff base in an ethanolic medium. The Schiff base and its metal complexes were established and analyzed by FT-IR, solubility test, melting point/decomposition temperature and conductivity measurement. The melting point of the Schiff base was found to be 157C and decomposition temperature of Co(II) and Ni(II) complexes were found to be 167°C and 174°C respectively. Molar conductance values of Co(II) and Ni(II) complexes are 1.31 and 2.04 µS/cm respectively. The solubility test carried out showed that the complexes are soluble in most organic solvents and insoluble in water. The antibacterial activity test of the ligand and metal complexes showed that the metal complexes were found to be active against the organism tested while the ligand was inactive.

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2,4-二硝基苯肼和苯甲醛衍生的Co(II)和Ni(II)希夫碱配合物的合成、分析及抗菌研究

以苯甲醛乙醇溶液和2,4-二硝基苯肼为原料，合成了席夫碱配体。将Co(II)和Ni(II)氯化物与制备的席夫碱在乙醇介质中回流，得到相应的金属配合物。采用红外光谱(FT-IR)、溶解度、熔点/分解温度、电导率等方法对希夫碱及其金属配合物进行了表征和分析。席夫碱的熔点为157C, Co(II)和Ni(II)配合物的分解温度分别为167℃和174℃。Co(II)和Ni(II)配合物的摩尔电导值分别为1.31和2.04µS/cm。溶解度测试表明，配合物在大多数有机溶剂中可溶，不溶于水。配体和金属配合物的抗菌活性试验表明，金属配合物对被试生物有活性，而配体无活性。

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Scholars International Journal of Chemistry and Material Sciences

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