Synthesizing, Structuring, and Characterizing Bioactivities of .Cr(III), La(III), and Ce(III) .Complexes with Nitrogen, Oxygen .and Sulpher donor bidentate Schiff base ligands

Abstract

Two Schiff bases, namely, 3-(benzylidene amino) -2-thioxo-6-methyl 2,5-dihydropyrimidine-4(3H)-one (LS])and 3-(benzylidene amino)-6-methyl pyrimidine 4(3H, 5H)-dione(LA)as chelating ligands), were used to prepare some complexes of Cr(III), La(III), and Ce(III)] ions. Standard physico-chemical procedures including metal analysis M%, element microanalysis (C.H.N.S) , magnetic susceptibility, conductometric measurements, FT-IR and UV-visible Spectra were used to identify Metal (III) complexes and Schiff bases (LS) and (LA). According to findings, a [Cr(III) complex] showed six coordinated octahedral geometry, while [La(III), and Ce(III) complexes]were structured with coordination number seven. Schiff's bases and mineral complexes were examined in vitro to investigate potential inhibition against Gram-positive bacteria such as Pseudonomous aerugionosa and Gram-negative bacteria such as Staphylococcus aureus. The low concentration for inhibition has been also determined by studying the minimal inhibitory concentrations MIC .Antibiotics (Ampicillin, Amoxicillin) have been chosen to contrast their activity. Furthermore, Anti-fungal activity against two types of fungi ʺAspergillus flavusʺ and ʺPenicillum Spp.ʺ was studied for these compounds. The results of the antibacterial activity were better compared to the standard drugs.

Synthesis, Characterization and Antioxidant Activity of New Azo Ligand and Some Metal Complexes of Tryptamine Derivatives

“…When compared to the ligand spectrum, all complex spectra show the elimination of the (O -H) phenolic and the shifted azo group (N=N). This demonstrates that the ligand and metal ion were coordinated via the nitrogen and oxygen atoms as well as via the nitrogen of the azo group 28 . In addition, new bands have been observed that belong to (M-N) at (593, 585, 562, and 554) cm -1 for the complexes of Ni, Pd, Pt, and Au, respectively, and (M-O) at (514, 521, 527, and 489) cm -1 for the complexes Ni, Pd, Pt, and Au, respectively, supporting the occurrence of coordination through the nitrogen and oxygen atoms [29][30][31] ,Ni(II) complex as shown in Fig 9 . Every complex's new bands were discovered to correlate with its coordinated water molecules 32 .…”

Molecular Docking, Synthesis and Evaluation for Antioxidant and Antibacterial Activity of New Oxazepane and Benzoxazepine Derivatives

“…Table 5 shows the antimicrobial activities of the (1B-3C) compounds. The DMSO was used as a control substance 37 .…”

استكشاف خصائص التوهين الصوتي وأشعة جاما داخل النظام الزجاجي K2O-PbO-SiO2

“…5. NIST XCOM software has been used to estimate the theoretical values of mass attenuation coefficient [13][14][15][16][17][18][19][20] . The mass attenuation coefficient is a crucial parameter in the field of gamma ray shielding materials [21][22][23] .…”