Formation of novel mono- and multi-nuclear complexes of Mn(II), Co(II) and Cu(II) with bis azo-dianils containing the pyrimidine moiety: Thermal, magnetic and spectral studies

Abu‐El‐Wafa, S. M.; El-Wakiel, Nadia A.; Issa, R. M.; Mansour, R. A.

doi:10.1080/00958970500048943

Cited by 24 publications

(13 citation statements)

References 20 publications

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“…In the IR spectra of 2-(((5-phenyl-1,3,4-thiadiazole-2-yl)imino)methyl)phenol, the most characteristic bands are at 3,320-3,379 cm -1 t(OH) and 1,630 cm -1 azomethine t(HC=N). Absence of t(C=O) and t(NH 2 ) peaks in the spectra of ligand indicates that the expected imino compound was formed by condensation from 2-amino 5-phenyl-1,3,4-thiadiazole and salicylaldehyde and it is also shown that there are no residual starting materials left in the ligand compound as well [26][27][28][29]. The IR data exhibit two absorption peaks at around 1,440 and 756 cm -1 , these bands can be assigned to the t([C=N-N=C\) and t(C-S-C) modes of vibrations of the thiadiazole ring, respectively [30].…”

Section: Resultsmentioning

confidence: 95%

Synthesis, characterization, surface morphology properties and effects of annealing temperature on optical properties of poly(2-(((5-phenyl-1,3,4-thiadiazole-2-yl)imino)methyl)phenyl methacrylate) (PTMPMA)

2014

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In this study, a new 5-phenyl-1,3,4-thiadiazole-containing vinyl monomer and its polymer were synthesized. The characterizations of the ligand, monomer and polymer were carried out using FTIR, UV-Vis, 1 H-NMR, elemental analysis and gel permeation chromatography techniques. The roughness average, root-mean-square roughness, surface skewness and surface kurtosis parameters of the poly(PTMPMA) film were found to be 1.98 nm, 2.84 nm, 1.529 and 5.777, respectively. Effects of the annealing temperature on optical properties of the poly(2-(((5-phenyl-1,3,4-thiadiazole-2-yl)imino)methyl)phenyl methacrylate) (PTMPMA) were investigated. The important optical parameters such as refractive index, optical band gap, angle of incidence, imaginary part of optical conductivity and real part of dielectric constants of the poly(PTMPMA) decrease and other important optical parameters such as excitation and dispersion energy, angle of refraction, real part of optical conductivity and imaginary part of dielectric constants of the poly(PTMPMA) increase with increasing annealing temperature. The absorption band edge values of the polymer films were found to be 2.34, 1.85 and 1.74 eV for 298, 523 and 643 K, respectively. The optical band gap values of the polymer films were found to be 3.314, 2.943 and 2.917 eV for 298, 523 and 643 K, respectively. The poly(PTMPMA) can be used as an active polymer layer in production of the electronic devices such as polymer diodes and metal-semiconductor contacts.Electronic supplementary material The online version of this article (

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Section: Resultsmentioning

confidence: 95%

Synthesis, characterization, surface morphology properties and effects of annealing temperature on optical properties of poly(2-(((5-phenyl-1,3,4-thiadiazole-2-yl)imino)methyl)phenyl methacrylate) (PTMPMA)

2014

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“…(1) and salicylaldehyde, and it is also shown that there are no residual starting materials left in the ligand compound as well [12,13]. The IR spectrum of the 2-amino-5-(2-amino-1,3,4-thiadiazoleyl)-1,3,4-thiadiazole (1) exhibits a NH 2 peak at 3280 cm −1 .…”

Section: Infrared Spectramentioning

confidence: 98%

“…The presence of hydrate or/and coordinated water molecules or ethanol molecule was also confirmed by elemental analyses and thermogravimetric analyses [12].…”

Section: Infrared Spectramentioning

confidence: 99%

Synthesis, characterization and thermal behavior of some Zn(II) complexes with ligands having 1,3,4‐thiadiazole moieties

Turan

Şekerci

2010

Heteroatom Chemistry

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Some new zinc(II) complexes of the type [Zn(L1)2(C2H5OH)2]·C2H5OH, [Zn(L2)2 Cl2]·H2O, and [Zn2(L3)2(H2O)4Cl4], where HL1 = N‐[5′‐amino‐2, 2′‐bis(1,3,4‐thiadiazole)‐5‐yl]‐2‐hydroxybenzaldehyde imine, L2 = N‐(5‐ethyl‐1,3,4‐thiadiazole‐2‐yl)tereph‐ thalaldehyde imine, and L3 = N,N′‐bis[5‐(4‐nitro phenyl)‐1,3,4‐thiadiazole‐2‐yl]terephthalaldehydedii‐ mine have been synthesized and characterized by IR, 1H NMR spectra, elemental analyses, magnetic susceptibility, UV–vis. and thermogravimetry‐differential thermal analysis (TGA‐DTA). On the basis of electronic spectral studies, an octahedral environment around the Zn(II) ion has been suggested. 1H NMR spectra of the metal complexes of ligands were found to be in agreement with the proposed stoichiometry. The presence of water molecules and ethanol in the Zn(II) complexes is also indicated by the thermal studies. © 2010 Wiley Periodicals, Inc. Heteroatom Chem 21:14–23, 2010; Published online in Wiley InterScience (http://www.interscience.wiley.com). DOI 10.1002/hc.20572

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“…The ESR pattern and g eff value (1.772) as well as the ESR parameters g ⊥ ＞g ॥ ＞2.0023 prove octahedral geometry, and indicate that the unpaired d-electron is present in the d z 2 orbital with slight distortion of the symmetry around Z axis. 50 The ESR spectra of the Mn(II) complex 1 show broad signal with g eff ＝1.744, which refers to the existence of high spin Mn(II) complex. 51 The negative contribution of the g eff values of the investigated complexes to the value of the free electron, 2.0023, indicates an increase in the covalent nature of the bonding between the metal ion and the ligand molecule.…”

Section: Uv-vis Spectra and Magnetic Momentsmentioning

confidence: 99%

Synthesis, Structural Characterization, and Antimicrobial Activities of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) Complexes of Triazole-based Azodyes

2011

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Formation of novel mono- and multi-nuclear complexes of Mn(II), Co(II) and Cu(II) with bis azo-dianils containing the pyrimidine moiety: Thermal, magnetic and spectral studies

Cited by 24 publications

References 20 publications

Synthesis, characterization, surface morphology properties and effects of annealing temperature on optical properties of poly(2-(((5-phenyl-1,3,4-thiadiazole-2-yl)imino)methyl)phenyl methacrylate) (PTMPMA)

Synthesis, characterization, surface morphology properties and effects of annealing temperature on optical properties of poly(2-(((5-phenyl-1,3,4-thiadiazole-2-yl)imino)methyl)phenyl methacrylate) (PTMPMA)

Synthesis, characterization and thermal behavior of some Zn(II) complexes with ligands having 1,3,4‐thiadiazole moieties

Synthesis, Structural Characterization, and Antimicrobial Activities of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) Complexes of Triazole-based Azodyes

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