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Synthesis, Structural Characterization and Antimicrobial Activity of Cu(II) and Fe(III) Complexes Incorporating Azo-Azomethine Ligand

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Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Coordination Chemistry Research Laboratory, Department of Chemistry, Govt. Science College, Jabalpur 482001, India
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Division of Chemistry and Biotechnology, Dongguk University, 123 Dongdae-ro, Gyeongju 780-714, Korea
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Department of Advanced Materials Chemistry, Dongguk University, 123 Dongdae-ro, Gyeongju 780-714, Korea
*
Author to whom correspondence should be addressed.
Molecules 2018, 23(4), 813; https://doi.org/10.3390/molecules23040813
Received: 6 March 2018 / Revised: 26 March 2018 / Accepted: 27 March 2018 / Published: 2 April 2018
(This article belongs to the Section Inorganic Chemistry)
We are reporting a novel azo-azomethine ligand, HL and its complexes with Cu(II) and Fe(III) ions. The ligand and its complexes are characterized by various physico-chemical techniques using C,H,N analyses, FT-IR, 1H-NMR, ESI-MS and UV-Vis studies. TGA analyses reveal complexes are sufficiently stable and undergo two-step degradation processes. The redox behavior of the complexes was evaluated by cyclic voltammetry. Furthermore, the ligand and its complexes were tested for antimicrobial activity against bacterial and fungal strains by determining inhibition zone, minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The complexes showed moderate antimicrobial activity when tested against Gram +ve and Gram −ve bacterial strains. To obtain insights into the structure of ligand, DFT studies are recorded. The results obtained are quite close to the experimental results. In addition, the energy gap, chemical hardness, softness, electronegativity, electrophilic index and chemical potential were calculated using HOMO, LUMO energy value of ligand. View Full-Text
Keywords: azo ligand; synthesis; DFT studies azo ligand; synthesis; DFT studies
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Azam, M.; Al-Resayes, S.I.; Wabaidur, S.M.; Altaf, M.; Chaurasia, B.; Alam, M.; Shukla, S.N.; Gaur, P.; Albaqami, N.T.M.; Islam, M.S.; Park, S. Synthesis, Structural Characterization and Antimicrobial Activity of Cu(II) and Fe(III) Complexes Incorporating Azo-Azomethine Ligand. Molecules 2018, 23, 813.

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