Thermal, spectroscopic, and solvent influence studies on mixed-ligand copper(II) complexes containing the bulky ligand: Bis[N-(p-tolyl)imino]acenaphthene

El‐Ayaan, Usama; Gabr, I.M.

doi:10.1016/j.saa.2006.07.012

Cited by 39 publications

(25 citation statements)

References 28 publications

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“…The small values of α 2 (0.5649–0.8046) in comparison to β 2 (0.892–1.019) confirm that the in‐plane σ‐bond is more covalent than the in‐plane π‐bond. The present results match well with behavior reported earlier …”

Section: Resultssupporting

confidence: 94%

2,4‐Dihydroxy‐5‐[(5‐mercapto‐1H‐1,2,4‐triazole‐3‐yl)diazenyl]benzaldehyde acetato, chloro and nitrato Cu(II) complexes: Synthesis, structural characterization, DNA binding and anticancer and antimicrobial activity

Gaber

Fathalla

El‐Ghamry

2019

Applied Organom Chemis

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Acetato, chloro and nitrato Cu(II) complexes of a novel azo compound, namely 2,4‐dihydroxy‐5‐[(5‐mercapto‐1H‐1,2,4‐triazole‐3‐yl)diazenyl]benzaldehyde, have been prepared. The stoichiometry, stereochemistry and bonding fashion of these copper chelates were deduced via elemental analyses, spectral methods and conductivity and magnetic measurements. Infrared spectral data confirmed the participation of azo N atom and the deprotonated OH group. UV–visible spectral data and magnetic measurements indicated octahedral stereo‐structure for the acetato and nitrato compounds and square planer for the chloro compound. Thermogravimetric analysis was applied to investigate the thermal degradation of the metal chelates. The thermo‐kinetic parameters were computed. The molecular modeling technique was used to support the predicted geometry of the prepared chelates. The interaction between the Cu(II) complexes and calf thymus DNA was studied using two techniques: absorption and viscosity measurements. The values of binding constant obtained from the absorption spectral method were calculated and found to be 4.23 × 104, 26.93 × 104, 13.01 × 104 and 5.36 × 104 M−1 for ligand and acetato, chloro and nitrato complexes, respectively. The antimicrobial activities were evaluated against various bacterial and fungi strains. The in vitro antitumor efficacy of the synthesized compounds was investigated against the HEPG2 cell line.

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Section: Resultssupporting

confidence: 94%

2,4‐Dihydroxy‐5‐[(5‐mercapto‐1H‐1,2,4‐triazole‐3‐yl)diazenyl]benzaldehyde acetato, chloro and nitrato Cu(II) complexes: Synthesis, structural characterization, DNA binding and anticancer and antimicrobial activity

Gaber

Fathalla

El‐Ghamry

2019

Applied Organom Chemis

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“…The complexes exhibit the asymmetric Cl-O stretching mode of the perchlorate anion at 1051 cm -1 and 1094 cm -1 and the asymmetric bending mode at 765 cm -1 and 833 cm -1 for complexes (1) and (2) respectively (Table 4) [26,[29][30][31]. The ν(C=N) of the ring was observed at 1568 cm -1 (1) and 1574 cm -1 (2) [32][33]. The presence of water molecules in the crystal lattice was revealed by the bands at 3439 cm -1 and 3453 cm -1 respectively for the complexes [34][35].…”

Section: Infrared Spectramentioning

confidence: 96%

Synthesis, Characterization and Crystal Structures of Mixed-Ligand Complexes of [Cu(bipy)2N3(ClO4)] and [Cu(5,5’-DiMebipy)2(N3)](ClO4)

et al. 2018

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Two mixed -ligand complexes [Cu(bipy) 2N3(ClO4)] and [Cu(5, Å, b = 7.59087(9) Å, c = 17.2614(3) Å, β = 111.2808(19)° and Z = 4. [Cu(5,5'-DiMebipy) [Cu(5, = 16,9027(3) Å, b = 7,59087(9) Å, c = 17,261di4(3) Å, β = 111,2808(19)° dan Z = 4. [Cu(5,5'-DiMebipy) 16,0312(11) Å, b = 7,9889(5) Å, c = 20,7167(18) Å, β = 110,285(8) 2(N3)](ClO4) also crystallizes in the monoclinic space group P21/c with the cell constants a = 16.0312(11) Å, b = 7.9889(5) Å, c = 20.7167(18) Å, β = 110.285(8)° and Z = 4. The UV-Vis spectra and X-ray determination indicate that [Cu(bipy)2N3(OClO3)] is distorted octahedral ligand field and non-electrolyte in nature while ABSTRAK Dua senyawa kompleks dengan ligan campuran [Cu(bipy)2N3(ClO4)] dan [Cu(5,5'-DiMebipy)2(N3)](ClO4) telah dipreparasi dan dikarakterisasi. Senyawa dikarakterisasi dengan analisis unsur, spektroskopi IR dan UV-Visibel, pengukuran suseptibilitas magnetik temperatur kamar, dan konduktivitas, sedangkan struktur zat-padat ditetapkan dengan analisis difraksi sinar-x kristal tunggal. [Cu(bipy)2N3(ClO4)] mengkristal dalam kelompok ruang monoklinik P21/c dengan tetapan sel a 2(N3)](ClO4) juga mengkristal dalam kelompok ruang yang sama dengan tetapan sel a =

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“…1. This change in the g aver - value suggests modification of the compound geometry from distorted tetrahedral in the solid state, while in solution an octahedral environment is favored [30].…”

Section: Epr Spectramentioning

confidence: 98%

Spectroscopic Studies and DFT Calculations of Cimetidine Complexes with Transition Metal Ions

et al. 2017

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The coordination behavior of the antiulcer drug cimetidine (cime) towards transition metal ions was investigated. The synthesis and characterization of [Cr(cime)2Cl2]Cl·3H2O, [Co(cime)Cl2]·5H2O, [Co(cime)3Cl]Cl·3H2O, [Ni(cime)Cl2(H2O)2]·H2O, [Cu(cime)Cl2]·2H2O, [Cu(cime)2Cl(H2O)]Cl·H2O, [Cu(cime)3Cl2]·3H2O, [Cu2(cime)Cl4], and [Zn(cime)Cl2]·1.5H2O are discussed, where cime acts as monodentate (imidazole N3) or bidentate ligand (N3 and S8). IR, UV-vis, EPR and NMR spectroscopies, mass spectrometry (FAB+), were employed for the characterization. In order to identify the most reactive areas of cimetidine, the electrostatic potential map of the ligand was calculated; also the structures of minimum energy of the coordination compounds were modeled using DFT (B3LYP/def2-TZVP) calculations.

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Thermal, spectroscopic, and solvent influence studies on mixed-ligand copper(II) complexes containing the bulky ligand: Bis[N-(p-tolyl)imino]acenaphthene

Cited by 39 publications

References 28 publications

2,4‐Dihydroxy‐5‐[(5‐mercapto‐1H‐1,2,4‐triazole‐3‐yl)diazenyl]benzaldehyde acetato, chloro and nitrato Cu(II) complexes: Synthesis, structural characterization, DNA binding and anticancer and antimicrobial activity

2,4‐Dihydroxy‐5‐[(5‐mercapto‐1H‐1,2,4‐triazole‐3‐yl)diazenyl]benzaldehyde acetato, chloro and nitrato Cu(II) complexes: Synthesis, structural characterization, DNA binding and anticancer and antimicrobial activity

Synthesis, Characterization and Crystal Structures of Mixed-Ligand Complexes of [Cu(bipy)<sub>2</sub>N<sub>3</sub>(ClO<sub>4</sub>)] and [Cu(5,5’-DiMebipy)<sub>2</sub>(N<sub>3</sub>)](ClO<sub>4</sub>)

Spectroscopic Studies and DFT Calculations of Cimetidine Complexes with Transition Metal Ions

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