An azo-azomethine ligand and its copper(II) complex: Synthesis, X-ray crystal structure, spectral, thermal, electrochemical and photoluminescence properties

Eren, Tuğba; Köse, Muhammet; Kurtoğlu, Nurcan; Ceyhan, Gökhan; McKee, Vickie; Kurtoğlu, Mükerrem

doi:10.1016/j.ica.2015.03.010

Cited by 42 publications

(21 citation statements)

References 46 publications

(58 reference statements)

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“…The bite angle of the ligand in 3 is considerably smaller (87.95°) than the bite angle of the other three complexes (92.1°–93.3°). These structural parameters are very similar to reported examples of this group of complexes [ 38 – 51 ]. For all complexes, the crystal packing is stabilized by multiple interactions like CH/π, π/π, CH/O, and C(benzylic)/π interaction (see crystal packing diagrams in Figs.…”

Section: Resultssupporting

confidence: 89%

Copper(II) complexes with imino phenoxide ligands: synthesis, characterization, and their application as catalysts for the ring-opening polymerization of rac-lactide

et al. 2016

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Four new copper complexes based on bidentate imino phenoxide ligands were synthesized and characterized by IR, UV–Vis spectroscopy, ESI mass spectrometry, single crystal X-ray diffraction, and electrochemistry. The crystal structures revealed that the copper(II) atoms are surrounded by phenolate oxygen and imine nitrogen atoms of two ligands in a distorted square-planar geometry. The existence of ligand-centered, as well as Cu(II)-centered quasi-reversible and reversible redox reactions are observed in the cyclic voltammetry experiments of all the complexes. All complexes are able to catalyze the ring-opening polymerization of rac-lactide yielding polymers with moderate molecular weights and moderately broad molecular weight distributions.Graphical abstract Electronic supplementary materialThe online version of this article (doi:10.1007/s00706-016-1830-7) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 89%

Copper(II) complexes with imino phenoxide ligands: synthesis, characterization, and their application as catalysts for the ring-opening polymerization of rac-lactide

et al. 2016

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“…Two bands in the range 519-520 and 410-460 cm −1 were assigned to ν(M-O) and ν(M-N), respectively. [39,40] The IR spectra of the ligand and its metal complexes are shown in Figure S1. Finally, it is concluded from the IR spectra of all prepared compounds that the azo-dye ligand coordinated to the metal ions through four sites-two nitrogen sites of the azo groups and two oxygen sites by deprotonation of the phenolic groups.…”

Section: Ir Spectramentioning

confidence: 99%

Metal complexes of tetradentate azo‐dye ligand derived from 4,4′‐oxydianiline: Preparation, structural investigation, biological evaluation and MOE studies

Deghadi

Mahmoud

Mohamed

2020

Applied Organom Chemis

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The Cr (III), Mn (II), Fe (III), Co (II), Ni (II), Cu (II) and Cd (II) complexes were prepared by reaction of its metal chlorides with new azo‐dye ligand (H2L). The ligand derived from 4,4′‐oxydianiline and 2‐amino‐4‐chlorophenol was synthesized in a 1:2 molar ratio. The structure of the ligand and its metal complexes was investigated using different tools such as elemental analysis (C, H, N and M), molar conductivity, IR, UV–vis, 1H‐NMR, mass spectrometry and thermogravimetric and differential thermogravimetric studies. The data showed that the ligand acted as a N,N,O,O‐binegative tetradentate ligand. All metal complexes had a octahedral structure as depicted by spectral and elemental analyses. The conductivity data showed the electrolytic nature of the Cr (III) and Fe (III) complexes while the other complexes were nonelectrolytes. Thermal analysis studies showed the decomposition of the complexes in four to five steps with the weight loss of hydrated water in the first decomposition step followed by the coordinated water and ligand molecules. Biological activity was tested for the prepared compounds against four bacterial species (Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa) and against two fungal species (Aspergillus fumigatus and Candida albicans). Also, all complexes were screened for anticancer activities against a breast cancer (MCF‐7) cell line. The [Co(L)(H2O)2] complex showed the lowest IC50 value. Molecular docking is a key tool in computer drug design. Therefore, investigation of protein receptors and ligand interaction plays a vital role in the design of structurally based drugs. As a result, docking studies were investigated for H2L ligand, [Mn(L)(H2O)2] and [Ni(L)(H2O)2] complexes with 5KBC, 3V7B and 4G9M receptors.

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“…Over the years, the azo compounds with at least one azo (–N=N–) group, separated by two phenyl rings, have received tremendous attention both in fundamental and applied research [ 1 , 2 , 3 , 4 , 5 , 6 ]. Furthermore, the azo compounds are used extensively in textile industry, printing systems, biological staining and various photochemical productions [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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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.

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An azo-azomethine ligand and its copper(II) complex: Synthesis, X-ray crystal structure, spectral, thermal, electrochemical and photoluminescence properties

Cited by 42 publications

References 46 publications

Copper(II) complexes with imino phenoxide ligands: synthesis, characterization, and their application as catalysts for the ring-opening polymerization of rac-lactide

Copper(II) complexes with imino phenoxide ligands: synthesis, characterization, and their application as catalysts for the ring-opening polymerization of rac-lactide

Metal complexes of tetradentate azo‐dye ligand derived from 4,4′‐oxydianiline: Preparation, structural investigation, biological evaluation and MOE studies

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

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