Spectroscopic and density functional theory investigation of novel Schiff base complexes

Spectroscopic, thermal, biological activity, molecular docking and density functional theoretical investigation of novel bis Schiff base complexes

“…The E binding of the complexes are about 4% higher than our previously reported complexes with a similar Schiff base structure namely 1,2‐bis[(2‐(2‐mercaptophenylimino)‐methyl)phenoxy]ethane using the same level of theory that may suggests a possibility of more stable complexes with phenolic Schiff base than thio‐phenolic ones.…”

Synthesis of novel macrocyclic Schiff's‐base and its complexes having N2O2 group of donor atoms. Characterization and anticancer screening are studied

“…On the other hand, the Fe(III) complex has a molar conductance value of 250 Ω −1 mol −1 cm 2 , indicating its ionic nature and it is considered as a 1:3 electrolyte. [29][30][31] 3.3 | FT-IR spectra and mode of bonding…”

Complexes and Chelates of Some Bivalent and Trivalent Metals with Ciprofloxacin Schiff Base

“…[20,[23][24][25][26][27][28][29][30] The absent of the band at 1728 cm -1 in complexes and the shift of the characteristic band of azomethine group to a lower value from 1624 cm -1 to 1578 cm -1 for Cr(III), Fe(III) and Co(II), at 1574 cm -1 for Mn(II), at 1570 cm -1 for Ni(II) indicate that the involvement of C=N group and oxygen of carboxylic group in the interaction with metal ion forming five and six membered rings and the carboxylic group is deprotonated. [31,32] In the case of monodentate carboxylate ligand, the antisymmetric and symmetric COOstretches will be shifted to higher and lower frequencies, respectively, with an average ∆ν>200 cm -1 . [33][34][35] For our complexes the presence of bands with different intensities in the region1628-1620 cm -1 in the IR spectra of the metal ciprofloxacin Schiff base complexes can be assigned to the asymmetric stretching vibration ν as ( C=O) of the ligated carboxylato group and the symmetric vibration occurs in the region 1389-1377 cm -1 with different intensities, [36][37][38][39] with ∆ν>200 cm -1…”