Abstract
Abstract Six mixed ligand complexes, namely, [Co(acac)L 1 ] ( 1 ), [Fe(acac)L 1 ] ( 2 ), [Co(acac)L 2 ] ( 3 ), [Fe(acac)L 2 ] ( 4 ), [Co(acac)L 3 ] ( 5 ), and [Fe(acac)L 3 ] ( 6 ) (H 2 L 1 = NN / -bis(salicylidene)-trans 1,2 diaminocyclohexane, H 2 L 2 = NN / -bis(salicylidene)-1,2 phenylenediamine, H 2 L 3 = NN / -bis(salicylidene)-4-methyl-1,2-phenylenediamine) were synthesised and characterized using elemental analysis, IR spectra, UV–Vis spectra, mass spectra, magnetic susceptibility measurements, 1 H and 13 C NMR spectroscopy, thermogravimetric analysis. The molar conductance measurement confirmed the non-electrolytic nature of the complexes in DMF solution. Antioxidant activity of the complexes was studied using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging method. Biological studies of the complexes have been carried out in vitro for antimicrobial activity against some selected gram-positive and gram-negative bacteria. DFT calculations were performed using GAUSSIAN 09 program to ascertain the stable electronic structure, HOMO-LUMO energy gap, chemical hardness and dipole moment of the complexes.
Published Version
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