Synthesis and characterization of 1,2-bis(2-(5-bromo-2-hydroxybenzilidenamino)-4-chlorophenoxy)ethane and its metal complexes: An experimental, theoretical, electrochemical, antioxidant and antibacterial study

Synthesis and Characterization of a New Difunctional Ligand and Its Metal Complexes: An Experimental, Theoretical, Cyclic Voltammetric, and Antimicrobial Study

“…is in an agreement with our study, but our findings showed that ligand (L), Co(II), Zn(II) and Ti(III) complexes showed weak antibacterial activities against P. aeruginosa. Keypour complexes probably have square pyramid geometries [70][71][72][73][74][75] . According to the obtained data it is obvious that the antimicrobial activity results show that the synthesized compounds possessed intermediate antibacterial activity when compared with amikacin and tetracyclin.…”

Synthesis, spectroscopic, thermal analyses, biological activity and molecular docking studies on mixed ligand complexes derived from Schiff base ligands and 2,6‐pyridine dicarboxylic acid

“…The diffused reflectance spectrum of [Cu(L b ) L c Cl]Cl complex showed broad band at 10,462 and 13,698 cm −1 which may be assigned to the transition 2 E g → 2 T 2g (D) in distorted octahedral geometry . The magnetic moment of the copper(II) complex was 1.83 BM, consistent with distorted octahedral geometry . Electronic spectrum of the Zn(II) and Hg(II) complexes did not provide information relating to geometry since the zinc and mercury atoms have d 10 configuration (diamagnetic) for which there was no d‐d transitions.…”

“…The spectra of Fe(II), Co(II) and Ni(II) mixed ligand complexes with L a ligand showed bands at 650, 520 and 510 nm, respectively, which may be assigned to d‐d transitions of metal ions. The n‐π* transition band was observed in the spectra of L a mixed ligand complexes at 270–340 nm indicated the involvement of the azomethine nitrogen group of the Schiff base ligand in the coordination with metal ions …”

“…These values were in tune with a high spin configuration and showed the presence of an octahedral environment around Ni(II) ion . The magnetic moment of the [Cu(L b ) L c Cl]Cl complex was 1.83 BM, consistent with distorted octahedral geometry …”

“…The diffused reflectance spectra of [Fe(L a ) L c Cl]Cl and [Fe(L b ) L c Cl]Cl complexes showed absorption bands at 15,650, 17,540 and 19,083 cm ‐1 and 15,345, 17,645 and 19,108 cm −1 , respectively. These bands were assigned to the octahedral geometry around Fe(II) ion . The diffused reflectance spectra of [Co(L a ) L c Cl]Cl·H 2 O and [Co(L b ) L c Cl]Cl complexes generally showed three absorption bands in the region at 9,645, 18,065 and 27,378 cm ‐1 and 9,875, 17,798 and 27,410 cm ‐1 , respectively, assigned to transitions 4 T 1g → 4 T 2g (F), 4 T 1g → 4 A 2g (F) and 4 T 1g → 4 T 2g (P), showing an octahedral geometry around the Co(II) ion .…”