Synthesis, characterization, and biological activity assessment of new metal complexes of Schiff bases produced from benzoin

Abstract

By the reaction of Benzoin with melamine and Benzoin with 5-aminosalysilc acid a new Schiff base is obtained the reaction of the legends with Mn++, Zn++, and Ag + salts leads to the complexes [M (L)2 ] X at PH=7-6, and [M (L)2 ] at PH=9-10, L= BMA, BMS M= Mn++ Zn++ and Ag +, Several chemical and physical measurements, such as melting point, molar conductivity, and magnetic properties, as well as FT-IR spectroscopy, UV-VIS spectroscopy element analysis (C.H.N.), and (1 H-NMR)spectroscopy, and GC-MASS. was used to identify the produced ligands and complex structures, the complexes of Mn++, and Znand ++ give hexacoordinated complexes having the shape octane al but Ag+ gives tetracoordinate complexes. having shape tetrahedral. then they were screened for biological activity using agar plate diffusion technique against Gram(+) (Staphylococcus aureus bacteria, pseudomonas aeruginosa bacteria) and Gram(−) (Escherichia coli bacteria, Klebsiella pneumonia bacteria) When compared to streptomycin and trimethoprim drug, all these ligands and their complexes show good antimicrobial effectualness.

TiFe2O4@SiO2–SO3H: A novel and effective catalyst for esterification reaction

“…The development and research of green and efficient nanomaterials as catalyst supports is a big challenge in the synthesis of organic compounds [ [14] , [15] , [16] ] [ [14] , [15] , [16] ] [ [14] , [15] , [16] ]. In the last decade, magnetic nanoparticles have been recognized as excellent supports due to their easy preparation and operation, and high surface area, easy recovery by the magnetic field, which will lead to increased product purity [ 17 , 18 ].…”