Nickel(II) and copper(II) complexes of Schiff base ligands containing N4O2 and N4S2 donors with pyrrole terminal binding groups: Synthesis, characterization, X-ray structures, DFT and electrochemical studies

Khandar, Ali Akbar; Cardin, C.J.; Hosseini‐Yazdi, Seyed Abolfazl; McGrady, John E.; Abedi, Marjan; Zarei, Seyed Amir; Gan, Yu

doi:10.1016/j.ica.2010.08.019

Cited by 36 publications

(6 citation statements)

References 42 publications

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“…The absorption spectrum for 0.001 mol L -1 solutions of the ligand (L) in DMF shows two absorption bands at 314 nm (log ε = 4.05) and 327 nm (log ε = 4.02), that these bands can be attributed to π→π* and n→π* transitions. 19 The absorption spectra for 0.001 mol L -1 solutions of complexes in DMF show bands at 308 to 325 nm corresponding to π→π* transitions. In general, the electronic transitions for zinc(II), cadmium(II) (d 10 ) and manganese(II) (d 5 high spin) complexes are spin-forbidden and hence cannot be observed.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of a New Unsymmetrical Potentially Pentadentate Schiff Base Ligand and Related Complexes with Manganese(II), Nickel(II), Copper(II), Zinc(II) and Cadmium(II)

Dehghani-Firouzabadi¹,

Firouzmandi²

2016

J. Braz. Chem. Soc.

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New unsymmetric thioether Schiff base amine, 2-(2-aminoethylthio)-N-(thiophene-2ylmethylene)aniline was prepared by reaction of 2-aminothiophenol with N-(2-bromoethyl) phthalimide and then by thiophene-2-carbaldehyde. Then, the phthalimide group converted to the amine by hydrazine hydrate. The new potentially pentadentate N 3 S 2 donor unsymmetrical Schiff base ligand, 2-(2-(pyridine-2-ylmethyleneamino)ethylthio)-N-(thiophene-2-ylmethylene) aniline (L) was prepared via [1 + 1] condensation of pyridine-2-carbaldehyde with this amine. Manganese(II), nickel(II), copper(II), zinc(II) and cadmium(II) complexes of this ligand were prepared by adding metal salts to an ethanolic solution in this ligand. The thioether amine, ligand (L) and unsymmetric Schiff base complexes are characterized by the appropriate spectroscopic methods such as infrared (IR), UV-Vis, 1 H nuclear magnetic resonance (NMR), 13 C NMR studies, X-ray, microanalysis and mass spectrometry.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of a New Unsymmetrical Potentially Pentadentate Schiff Base Ligand and Related Complexes with Manganese(II), Nickel(II), Copper(II), Zinc(II) and Cadmium(II)

Dehghani-Firouzabadi¹,

Firouzmandi²

2016

J. Braz. Chem. Soc.

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“…It should be noted that some differences are due to the X-ray crystal diffraction being applied in the solid phase, while theoretical calculations were carried out in the gas phase. 10,54 Careful analysis of the bond lengths and bond angles data leads to the conclusion that Cu complex has a distorted square planar coordination around the Cu II center.…”

Section: 4 Antibacterial Activitymentioning

confidence: 99%

Copper(II) Schiff Base Complexes with Catalyst Property: Experimental, Theoretical, Thermodynamic and Biological Studies

Esmaielzadeh

Zarenezhad

2018

ACSi

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Two novel copper(II) Schiff base complexes were synthesized and characterized by various physico-chemical and spectroscopic methods, revealing a distorted square planar geometry around the copper atom. The analytical data confirmed the 1:1 metal to ligand stoichiometry of the complexes. B3LYP/(LANL2DZ/6-311G**) density functional theory (DFT) were used to investigate structural and electronic properties of the synthesized compounds in gas phase. The computational results support the conclusion obtained by the experimental studies. Thermodynamic study of complex formation in solution was carried out spectrophotometrically at 25 °C. These compounds were also subjected to study in vitro antibacterial screening against some bacteria. Also, click reaction was investigated for its catalytic properties. The synthesized Schiff base copper complexes catalyzed 1,3-dipolar Huisgen cycloaddition of different functionalized ?-azido alcohols and alkynes in the presence of ascorbic acid in a solution of THF/H2O (2:1, V/V) at room temperature.

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“…The neighboring chains interact with each other side-by-side by SO 2− 4 ions through weak Cu-O bonds (2.372(7) and 2.795(2) Å) which are comparable to those reported in documents. [32][33][34] This leads to the formation of a porous two-dimensional sheet, which presents a flaskstacking appearance as shown in figure 3b and figure S7. The lattice DMF and H 2 O molecules are filled in the voids.…”

Section: Crystal Structuresmentioning

confidence: 99%

Synthesis and structures of two new Cu(I) frameworks bearing1,3-bis(4-pyridyl)propane and inorganic linkers

et al. 2016

J Chem Sci

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Two novel metal-organic coordination polymers [Cu 2 (bpp)Cl 2 ] (1) and [Cu 2 (bpp) 2 SO 4 ]•DMF• 3H 2 O (2) were prepared from the reactions of 1,3-bis(4-pyridyl)propane (bpp) with CuCl 2 and CuSO 4 , respectively, which were characterized by single-crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy and powder X-ray diffraction analysis. 1 features inorganic one-dimensional [Cu 2 Cl 2 ] ribbons, which are linked by the bpp ligands to form a three-dimensional metal-organic framework exhibiting a 3,3,4connected 3-nodal topology. 2 presents [Cu 2 SO 4 ] inorganic dinuclear secondary building blocks which are further connected by the bpp ligands to construct a two-dimensional framework featuring flask-stacking appearance. They are typical examples of metal-organic framework constructed by the synergistic use of organic and inorganic linkers.

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Nickel(II) and copper(II) complexes of Schiff base ligands containing N4O2 and N4S2 donors with pyrrole terminal binding groups: Synthesis, characterization, X-ray structures, DFT and electrochemical studies

Cited by 36 publications

References 42 publications

Synthesis and Characterization of a New Unsymmetrical Potentially Pentadentate Schiff Base Ligand and Related Complexes with Manganese(II), Nickel(II), Copper(II), Zinc(II) and Cadmium(II)

Synthesis and Characterization of a New Unsymmetrical Potentially Pentadentate Schiff Base Ligand and Related Complexes with Manganese(II), Nickel(II), Copper(II), Zinc(II) and Cadmium(II)

Copper(II) Schiff Base Complexes with Catalyst Property: Experimental, Theoretical, Thermodynamic and Biological Studies

Synthesis and structures of two new Cu(I) frameworks bearing1,3-bis(4-pyridyl)propane and inorganic linkers

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