Template synthesis and structure of Co(II), Ni(II), and Cu(II) complexes with pyridoxilydenetaurinate Schiff base ligand

Guricová, Miroslava; Pižl, Martin; Smékal, Zdeněk; Nádherný, Ladislav; Čejka, Jan; Eigner, Václav; Hoskovcová, Irena

doi:10.1016/j.ica.2018.03.031

Cited by 12 publications

(11 citation statements)

References 46 publications

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“…The equatorial plane is occupied by N6 and N9 of Bipy, O5 of H 2 mel and O10 of one water molecule. The bond lengths and bond angles for complex C are presented in Table S5 . Ni(II) is bonded more strongly with surrounding nitrogen and oxygen atoms of H 2 mel than nitrogen atoms of Bipy.…”

Section: Resultsmentioning

confidence: 99%

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Sadeek

El‐Hamid

Mohamed

et al. 2019

Applied Organom Chemis

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The mixed‐ligand Mn(II), Fe(III), Ni(II), Cu(II), Zn(II) and Zr(IV) complexes of meloxicam (H2mel) and 2,2′‐bipyridine (Bipy) were prepared and characterized. For all complexes, the analytical and spectroscopic results revealed that H2mel acts in a monobasic bidentate manner through the oxygen of the amide and nitrogen of the thiazole groups, whereas Bipy coordinates through the two nitrogen atoms with slightly distorted octahedral geometry. Thermodynamic parameters (E, ΔS*, ΔH* and ΔG*) were calculated using Coats–Redfern and Horowitz–Metzger methods. The geometries of H2mel and the complexes were carefully studied using density functional theory to predict the properties of materials performed using the hybrid density functional method B3LYP. All studied complexes are soft with respect to H2mel where η varies from 0.096 for Zn(II) complex to 0.067 for Fe(III) complex and σ varies from 10.42 to 14.93 eV, while η and σ for H2mel are 0.14 and 7.14 eV, respectively. The antibacterial activities of the ligands and metal complexes were investigated and the data show that the complexes are active against some bacterial species compared with H2mel.

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Section: Resultsmentioning

confidence: 99%

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Sadeek

El‐Hamid

Mohamed

et al. 2019

Applied Organom Chemis

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“…The bond lengths of the three water molecules between Ni (II) and the oxygen atoms O6, O7 and O8 are also 2.015, 2.018, and 2.100 Å. [46] The energy of this complex is −280.923 eV, highly dipole 5.309D more than others complexes and the value of heat of formation is −8762.088 k cal/mol.…”

Section: The Structure Of [Cu (Na)(phen) (H 2 O) 3 ] 2+ Complexmentioning

confidence: 87%

Structural elucidation, molecular modeling, and biological and antioxidant studies of phenanthroline/nicotinamide metals complexes

El‐Shwiniy

El-Wahed

Saeed

et al. 2021

Applied Organom Chemis

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Three new cobalt (II), nickel (II), and copper (II) complexes [M (nicotinamide)(phenanthroline)(H2O)3]Cl2·3H2O (where M: Co (II), Ni (II) and Cu (II)) have been prepared and characterized by elemental analysis, Fourier transform infrared (FT‐IR), and ultraviolet/visible (UV–Vis) spectroscopy as well as thermal analysis. The molar conductance measurements proved that the complexes were electrolytes. The results obtained from FT‐IR confirm that the metal atoms were coordinated by one nitrogen atom from nicotinamide (NA) ligand, two nitrogen atoms from phenanthroline (Phen), and three oxygen atoms from three different water molecules. The complexes have octahedral structure. thermogravimetry (TGA) and its differential (DTG) analyses confirmed the suggested stereochemistry. Coats–Redfern and Horowitz–Metzger equations were used to calculate kinetic and thermodynamic parameters. Molecular modeling calculations confirm the structural geometry of the complexes, and the data indicate that the complexes are soft with respect to ligands where absolute softness (σ) varied from 5.34 to 13.33 eV, whereas σ for NA and Phen are 5.34 and 8.19 eV, respectively. The ligands and their complexes were assayed for their in vitro antimicrobial activities against some bacterial and fungal strains; the data showed that the complexes were active against some bacterial species compared with NA and Phen. Moreover, complexes and ligands revealed excellent antioxidant properties and could be useful in fighting the free radicals which occur in close connection with cancerous cells.

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“…Although largely explored, the coordination chemistry of metal transition remains very interesting owing to the variably of the structures [1][2][3] and the possibility of applications in industries [4][5][6] of the complexes synthesized in this kind of chemistry. According to the metal center used, several degrees of oxidation, [7,8] different coordination numbers and original geometries that are not always easily predicted can be observed.…”

Section: Introductionmentioning

confidence: 99%

Metal transition complexes of tridentate Schiff base ligands derived from 2-hydrazinopyridine: synthesis, spectroscopic characterization and X-ray structures

et al. 2019

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Mononuclear complexes of 1-(pyridin-2-ylmethylidene)-2-(pyridin-2-yl)hydrazine (HL 1 ) and 1-(pyridin-2-yl)-2-(1-, [Zn(HL 1 )(CH3COO)2] . (H2O)3 (2), [Mn(HL 2 )2] . (ClO4)2 (3) and [Cu(HL 2 )(NO3)2] (4), were synthesized and characterized by physico-chemical and spectroscopic methods and X-ray structure determination. The mononuclear compounds 1, 2 and 4 contain one ligand molecule per metal atom while the manganese (II) atom in the compound 3 is coordinated to two ligand molecules. Both ligands coordinated to the transition metal center in tridentate fashion through two Npyridyl atoms and one Nimino atom. The chloride and acetate anions coordinate in monodentate manner respectively in complex 1 and in complex 2. In complex

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Template synthesis and structure of Co(II), Ni(II), and Cu(II) complexes with pyridoxilydenetaurinate Schiff base ligand

Cited by 12 publications

References 46 publications

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Structural elucidation, molecular modeling, and biological and antioxidant studies of phenanthroline/nicotinamide metals complexes

Metal transition complexes of tridentate Schiff base ligands derived from 2-hydrazinopyridine: synthesis, spectroscopic characterization and X-ray structures

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