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This study aims to prepare charge transfer complexes derived from organochalcogenide of arylamide derivatives with different quinones. A new charge-transfer complexes have been developed through a direct reaction between (' antioxidant activity was evaluated through α,α-diphenyl-β-picrylhydrazyl at 10-0.312 mg/mL. The results showed that all comple...
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Context 1
... A C = Absorbance of blank, A t = Absorbance of the sample. The required concentration mg/mL for inhibiting 50% of DPPH (IC 50 ) values was determined by linear regression (Table 1). 2 Se, and (PhCH 2 NHCOCH 2 ) 2 E, where (E = S, Se, and Te) as electron donors and quinones such as DDQ, TCNQ, and TCNE as electron acceptors in acetonitrile solution yield solid complexes 1:1 stoichiometry. ...Context 2
... required concentration mg/mL for inhibiting 50% of DPPH (IC 50 ) values was determined by linear regression (Table 1). 2 Se, and (PhCH 2 NHCOCH 2 ) 2 E, where (E = S, Se, and Te) as electron donors and quinones such as DDQ, TCNQ, and TCNE as electron acceptors in acetonitrile solution yield solid complexes 1:1 stoichiometry. Table 1 shows the structure and physical properties of new complexes. We focused on identifying functional groups in the quinones, specifically the C=O The and C≡N groups, by studying FTIR spectra of chargetransfer complexes. ...Context 3
... study conducted in ethanol solvent at 200-800 nm examined the UV-vis spectra of charge-transfer complexes and their component. The results were included in Table 1 and Fig. S9. Organic molecules such as quinones have electron systems and possess strong absorption bands that appear in the UV region of the [22,26,28]. ...Citations
... The data suggest that precursor complexes and free ligands exhibit significantly weaker scavenging effects compared to their Fe(II) complexes, primarily due to the organic ligand's chelation with Fe(II). While the radical scavenging mechanism of these complexes remains unclear, the experimental results provide valuable insights for the development of more potent antioxidants [26]. ...
In this study, a new multidentate ligand based on the 2,2’-bipyridine derivatives incorporating diamide functional group were synthesized and their corresponding transition complexe with irone (II) were prepared. The lihgand were synthesized by oxidizing of the precursor compound of 5,5'- dimethyl-2,2'- bipyridine to the acid derivatives which was subsequently converted into the acidchloride derivatives with thonylchloride, then following treatment with the amines, pyridine 2 carboxmaide afforded the diamide-functionalised ligand. The structure of the ligand and the transition complex was confirmed by elemental analysis, NMR, FTIR, UV-Vis, and mass techniques.
