NEW COMPLEXES OF 2-(1H-1, 2, 4-TRIAZOL-3-YL) PYRIDINE WITH Co(II), Cd(II), Rh(III), IONS: SYNTHESIS, STRUCTURE, PROPERTIES AND POTENTIAL APPLICATIONS

Horlescu, Petronela; Sutiman, Daniel; Stan, Corneliu Sergiu; Mîţă, Carmen; Peptu, Cristian; Fortună, Maria Emiliana; Albu, Cristina

doi:10.30638/eemj.2015.040

Cited by 2 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CuSHL complex has the best semiconductive properties due to the small bandgap indicates to the easy electronic transitions from the HOMO to LUMO energy levels. 24…”

Section: Figure 2 Diffuse Reflectance Spectra Of Shl and Complexesmentioning

confidence: 99%

Synthesis and photophysical study of divalent complexes of chelating Schiff base

Rashad

Ibrahim

Ahmed

et al. 2020

Baghdad J. Biochem. Appl. Biol. Sci.

View full text Add to dashboard Cite

Background: Schiff base compounds derivative from1,2,4-triazole, and their transition metal complexes play an essential role in coordination and bioinorganic chemistry due to biological and industrial applications. Objective: The work aims to prepare and characterize of 1, 2, 4-triazole Schiff base and its complexes with a theoretical study using PM3 calculation and HyperChem program, photophysical properties, and surface morphology for these complexes. Methods: 1, 2, 4-triazole Schiff base prepared by condensation reaction between 4-Amino-3-mercapto-5-phenyl-4H-1,2,4-triazole and 2-hydroxy-1-naphthaldehyde, then Schiff base reacted with Co2+, Ni2+, and Cu2+ ions, the synthesized 1, 2, 4-triazole Schiff base, and its complexes were characterized by infrared spectra, magnetic susceptibility, conductivity measurements, photophysical properties, and surface morphology measured by atomic force microscopy. The practical results were reinforced with a theoretical study for these Schiff base complexes. Then the proposed structures of the prepared complexes. Results: 1, 2, 4-triazole Schiff base act as a chelate ligand. The coordination has occurred through the oxygen of the phenolic group O-H and the nitrogen of the imine group N=C of Schiff base with divalent metal ions. Cobalt complex has a tetrahedral geometry, while the nickel and copper complexes have square planar geometries. The stability of all compounds was studied by calculating the energy gap by diffuse reflectance spectroscopy and theoretical calculations. Copper Schiff base is a more stable complex due to the lower value of the energy gap, and the copper Schiff base complex is more semiconductivity than the other complexes. Surface morphology, properties of chelating Schiff base ligand and its complexes measured by atomic force microscopy, cobalt Schiff base complex is higher roughness. The bond length of (-C=N-), (-C-O-),(M-O), and (M-N) are affected in the coordination with metal ions, the bond length of the square planar geometry more affected than tetrahedral geometry. Conclusion: All compounds were prepared successfully, characterized, and photophysical properties were studied.

show abstract

“…The CuSHL complex has the best semiconductive properties due to the small bandgap indicates to the easy electronic transitions from the HOMO to LUMO energy levels. 24…”

Section: Figure 2 Diffuse Reflectance Spectra Of Shl and Complexesmentioning

confidence: 99%

Synthesis and photophysical study of divalent complexes of chelating Schiff base

Rashad

Ibrahim

Ahmed

et al. 2020

Baghdad J. Biochem. Appl. Biol. Sci.

View full text Add to dashboard Cite

show abstract

Synthesis, Structure, and Properties of a Dinuclear Cu(II) Coordination Polymer Based on Quinoxaline and 3,3-Thiodipropionic Acid Ligands

Tella

Owalude

Adimula

et al. 2021

J Inorg Organomet Polym

View full text Add to dashboard Cite

The coordination polymer [Cu 2 (TDPH) 4 (QNX)].DMF, (QNX = Quinoxaline; TDPH = 3,3thiodipropionic acid), has been prepared by reaction of copper acetate, TDPH, and quinoxaline. The compound was characterized by elemental analysis, FTIR spectroscopy, and single-crystal Xray diffraction. The crystal is monoclinic with a P21/n space group and dimensions of a = 12.889(3) Å, b = 14.983(4) Å, c = 14.091(3) Å, α = 90 °, β = 90.200(11) °, γ = 90 °, V = 2721.18 (2) Å 3 , Z = 4. The ligands are hexagonally coordinated to the Cu(II) centre in the form of Cu2O4N with one nitrogen atom from the quinoxaline ligand, and four oxygen atoms from four TDPH molecules in a monodentate fashion. The Cu-Cu bond length was 2.642(1) and 2.629(1) Å for the Cu1-Cu1 and Cu2-Cu2 bonds. The QNX ligand bridged the two copper atoms. The catalytic reduction of 4-nitrophenol to 4-aminophenol using NaBH4 in the presence of [Cu 2 (TDPH) 4 (QNX)].DMF, as catalyst was completed within 11 minutes. The 4-aminophenol product was confirmed using 1 H NMR spectroscopy.

show abstract

NEW COMPLEXES OF 2-(1H-1, 2, 4-TRIAZOL-3-YL) PYRIDINE WITH Co(II), Cd(II), Rh(III), IONS: SYNTHESIS, STRUCTURE, PROPERTIES AND POTENTIAL APPLICATIONS

Cited by 2 publications

References 21 publications

Synthesis and photophysical study of divalent complexes of chelating Schiff base

Synthesis and photophysical study of divalent complexes of chelating Schiff base

Synthesis, Structure, and Properties of a Dinuclear Cu(II) Coordination Polymer Based on Quinoxaline and 3,3-Thiodipropionic Acid Ligands

Contact Info

Product

Resources

About