期刊
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
卷 92, 期 12, 页码 2723-2733出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1070363222120222
关键词
Schiff base; metal complexes; thermal analysis; biological activity; molecular docking
资金
- UGC - Begum Rokeya University, Rangpur, Bangladesh
A novel Schiff base ligand and its metal complexes were synthesized and characterized. The metal-ligand stoichiometry and geometry of the complexes were determined based on analytical data and spectroscopic studies. Thermal analysis and antibacterial activity evaluation were conducted, and molecular docking analysis and quantum computational calculations were used to study the molecular characteristics of the complexes.
Schiff base ligand [3-(2-hydroxyphenylimino)-1,3-dihydroindol-2-one] was synthesized by the condensation reaction of isatin with 2-aminophenol. The Schiff base and its metal complexes with Co(II), Ni(II), and Cu(II) and ions were permeated by H-1 NMR, IR, elemental analysis, ESI-MS spectroscopy, electronic spectroscopy, and some physicochemical measurements. The Schiff base behaved as a tridentate ligand in all metal complexes and was linked by azomethine nitrogen (=C=N). Supported by analytical data the metal-ligand stoichiometry in the formation of complexes was found as 1 : 2 molecular ratio. Based on analytical data allied with spectroscopic studies spilled that the Cu(II) complex preferred tetrahedral geometry, while Ni(II) and Co(II) complexes offered square planar and octahedral geometry, respectively. The complexes were undergone thermal analysis (TGA and DTG); complexes were found thermally stable up to 200 degrees C. All the stable assembled compounds were assessed for antibacterial competency. The ligand and the complexes were played mild to sturdy antibacterial activity against numerous pathogenic bacterial species, although growth inhibitory activities of complexes were enhanced comparatively than their respective ligands. Additionally, molecular docking analysis and quantum computational calculations based on the density functional theory (DFT) approach were used to study the molecular characteristics of the novel complexes and provide in-depth insights into their involvement in their ability to restrict bacterial growth.
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