Preparation, spectral, X-ray powder diffraction and computational studies and genotoxic properties of new azo–azomethine metal chelates

Bitmez, Şirin; Sayın, Koray; Avar, Barış; Köse, Muhammet; Kayraldız, Ahmet; Kurtoğlu, Mükerrem

doi:10.1016/j.molstruc.2014.07.005

Cited by 30 publications

(9 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These bands are quite different from those observed for the precursor compounds (Figure S2) [35,36]. The extent of supramolecular organization was estimated based on the ratio between these absorption intensities for the PBA and PBA-CD materials.…”

Section: Resultsmentioning

confidence: 86%

New Hybrid Nanomaterial Based on Self-Assembly of Cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes

Carvalho

Silva

Macedo

et al. 2015

IJMS

View full text Add to dashboard Cite

Supramolecular self-assembly has been demonstrated to be a useful approach to developing new functional nanomaterials. In this work, we used a cobalt Prussian blue analogue (PBA, Co3[Co(CN)6]2) compound and a β-cyclodextrin (CD) macrocycle to develop a novel host-guest PBA-CD nanomaterial. The preparation of the functional magnetic material involved the self-assembly of CD molecules onto a PBA surface by a co-precipitation method. According to transmission electronic microscopy results, PBA-CD exhibited a polydisperse structure composed of 3D nanocubes with a mean edge length of 85 nm, which became shorter after CD incorporation. The supramolecular arrangement and structural, crystalline and thermal properties of the hybrid material were studied in detail by vibrational and electronic spectroscopies and X-ray diffraction. The cyclic voltammogram of the hybrid material in a 0.1 mol·L−1 NaCl supporting electrolyte exhibited a quasi-reversible redox process, attributed to Co2+/Co3+ conversion, with an E1/2 value of 0.46 V (vs. SCE), with higher reversibility observed for the system in the presence of CD. The standard rate constants for PBA and PBA-CD were determined to be 0.07 and 0.13 s−1, respectively, which suggests that the interaction between the nanocubes and CD at the supramolecular level improves electron transfer. We expect that the properties observed for the hybrid material make it a potential candidate for (bio)sensing designs with a desirable capability for drug delivery.

show abstract

Section: Resultsmentioning

confidence: 86%

New Hybrid Nanomaterial Based on Self-Assembly of Cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes

Carvalho

Silva

Macedo

et al. 2015

IJMS

View full text Add to dashboard Cite

show abstract

“…The bathochromic shift of these absorption bands on chelation may be owing to the participation of a lone pair of electrons of N and O atoms to the metal ion, demonstrating the participation of azomethine and carbonyl groups in chelation . Additionally, the band at 407 nm may be assigned to the transition within the molecule, actually an intramolecular charge transfer interaction . The VO 2+ complex UV–Vis.…”

Section: Resultsmentioning

confidence: 95%

Synthesis and Characterization of VO²⁺, Co²⁺, Ni²⁺, Cu²⁺ and Zn²⁺ Complexes of a Schiff base ligand derived from ethyl 2‐amino‐6‐ethyl‐4,5,6,7‐tetrahydrothieno[2,3‐c]pyridine‐3‐carboxylate and their Investigation as fungicide Agents

Shakdofa

Labib

Abdel‐Hafez³

et al. 2018

Applied Organom Chemis

View full text Add to dashboard Cite

Complexes of VO 2+ , Co 2+ , Ni 2+ , Cu 2+ , and Zn 2+ ethyl-6-ethyl-2-((2hydroxybenzylidene)amino)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate were synthesized and characterized via different spectroscopic techniques.The whole results declared that the complexes assembled in 1:1 mole ratio furthermore, the spectroscopic data analysis proved the present ligand adhered to the different metal ions in neutral or monobasic tridentate ligand via azomethine nitrogen, carbonyl oxygen atoms and protonated/deprotonated phenolic hydroxyl group. The UV-Vis. and ESR spectroscopic data analysis proposed a distorted octahedral or octahedral structure for all complexes. The ESR spectra for Cu 2+ complexes (5-6) revealed an axial symmetry with g‖ > g ┴ > g e , denoting to distorted octahedral Cu 2+ complex and the free electrons in the M shell exist in a d (x2-y2) orbital with a remarkable covalent bond aspect. The synthesized complexes showed moderate to superb fungicide activity. All complexes are more active than both standard drug and ligand against C. albicans where complexes (5-7) are more active against A. flavus and compounds (1), (4-5), (7) against S. cerevisiae whereas only complex (6) is more active against A niger.

show abstract

“…Because of the proton-transfer ability of azo-azomethine dyes, they play an important role in many scientific fields; in addition, their tautomers exhibit different optical behaviours and possess different electronic absorption spectra and dyeing properties (1,4,5). The extent to which a tautomer is favoured under certain conditions can play a significant role in terms of its structural and optical behaviours in different medium (6,15).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterisation and DFT Calculations of Azo-Imine Dyes

Özkınalı¹,

Çavuş²,

Sakin³

2017

Journal of the Turkish Chemical Society, Section A: Chemistry

View full text Add to dashboard Cite

In this study, azo dyes containing an imine group were synthesised by coupling phydroxybenzylidene aniline with the diazonium salts of p-toluidine, 4-aminophenol, aniline, pchloroaniline, p-fluoroaniline and p-nitroaniline. The compounds were characterised by melting point, elemental, UV-Vis and IR analyses as well as 1 H-NMR and 13 C-NMR spectroscopies. Moreover, the experimental data were supplemented with density functional theory (DFT) calculations. The experimental data on FT-IR and UV-Vis spectra of the compounds were compared with theoretical results. The DFT calculations were performed to obtain the ground state geometries of the compounds using the B3LYP hybrid functional level with 6-311++g(2d,2p) basis set. Frontier molecular orbital energies, band gap energies and some chemical reactivity parameters, such as chemical hardness and electronegativity, were calculated and compared with experimental values. A significant correlation was observed between the dipole moment and polarities of the solvents and the absorption wavelength of the compounds.

show abstract

Preparation, spectral, X-ray powder diffraction and computational studies and genotoxic properties of new azo–azomethine metal chelates

Cited by 30 publications

References 45 publications

New Hybrid Nanomaterial Based on Self-Assembly of Cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes

New Hybrid Nanomaterial Based on Self-Assembly of Cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes

Synthesis and Characterization of VO²⁺, Co²⁺, Ni²⁺, Cu²⁺ and Zn²⁺ Complexes of a Schiff base ligand derived from ethyl 2‐amino‐6‐ethyl‐4,5,6,7‐tetrahydrothieno[2,3‐c]pyridine‐3‐carboxylate and their Investigation as fungicide Agents

Synthesis, Characterisation and DFT Calculations of Azo-Imine Dyes

Contact Info

Product

Resources

About

Preparation, spectral, X-ray powder diffraction and computational studies and genotoxic properties of new azo–azomethine metal chelates

Cited by 30 publications

References 45 publications

New Hybrid Nanomaterial Based on Self-Assembly of Cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes

New Hybrid Nanomaterial Based on Self-Assembly of Cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes

Synthesis and Characterization of VO2+, Co2+, Ni2+, Cu2+ and Zn2+ Complexes of a Schiff base ligand derived from ethyl 2‐amino‐6‐ethyl‐4,5,6,7‐tetrahydrothieno[2,3‐c]pyridine‐3‐carboxylate and their Investigation as fungicide Agents

Synthesis, Characterisation and DFT Calculations of Azo-Imine Dyes

Contact Info

Product

Resources

About

Synthesis and Characterization of VO²⁺, Co²⁺, Ni²⁺, Cu²⁺ and Zn²⁺ Complexes of a Schiff base ligand derived from ethyl 2‐amino‐6‐ethyl‐4,5,6,7‐tetrahydrothieno[2,3‐c]pyridine‐3‐carboxylate and their Investigation as fungicide Agents