Spectroscopic approach in the characterization of the copper(II) complexes of isatin-3,2′-quinolyl-hydrazones and their adducts

Gupta, Lokesh Kumar; Bansal, Usha; Chandra, Sulekh

doi:10.1016/j.saa.2005.11.026

Cited by 17 publications

(4 citation statements)

References 15 publications

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“…The spectra of acetato complexes 2, 5, 8, 11, 13 and 18 showed two bands characteristic to the acetate group, the first in the range 1542-1566 cm À1 and the second in the range 1354-1400 cm À1 assigned to (C¼O) and (C-O), respectively. The difference between these two bands is in the range 170-201 cm À1 , suggesting that the acetate coordinates unidentate with the metal ions [23,24]. In the case of nitrato complexes 7, 10, 15, 17 and 19, a strong band in the range 1375-1384 cm À1 , as well as a weak band around 1288-1320 cm À1 , was assigned to unidentate nitrate [25].…”

Section: Infrared Spectramentioning

confidence: 98%

Synthesis and characterization of a hydrazone ligand containing antipyrine and its transition metal complexes

Fouda

Abd-Elzaher

Shakdofa

et al. 2008

Journal of Coordination Chemistry

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The coordination chemistry of N 0 -((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)methylene)-2-hydroxybenzohydrazide with copper(II), nickel(II), cobalt(II), manganese(II), zinc(II), palladium(II), iron(III), ruthenium(III), uranyl(VI), and titanium(IV) has been studied. The ligand and its complexes was characterized by elemental and thermal analyses, magnetic moments and conductivity measurements as well as spectroscopic techniques such as infrared, mass spectra, nuclear magnetic resonance, electron spin resonance and electronic absorption spectra. The spectral data showed that the ligand is monobasic tridentate coordinated via the enolic carbonyl oxygen of the hydrazide moiety, azomethine nitrogen and pyrazolone oxygen atoms.

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Section: Infrared Spectramentioning

confidence: 98%

Synthesis and characterization of a hydrazone ligand containing antipyrine and its transition metal complexes

Fouda

Abd-Elzaher

Shakdofa

et al. 2008

Journal of Coordination Chemistry

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“…Also, the lower shifted appearance of υC=N and υC-O bands verify the coordination sites. In the spectrum of the Fe(III) complex, two new bands appeared at 1384 and 1489 cm −1 and were assigned to υ sym and υ asym vibrations of bidentate nitrate groups [35]. Also, in the Mn(II) complex spectrum, the same appearance was observed with the bidentate acetate group appeared with a splitting shoulder of υ as (OCO) at 1491 and the υ s (OCO) appeared at 1342 cm −1 .…”

Section: Ir and Nmr Spectramentioning

confidence: 70%

Elaborated studies on nano-sized homo-binuclear Mn(II), Fe(III), Co(II), Ni(II), and Cu(II) complexes derived from N2O2 Schiff base, thermal, molecular modeling, drug-likeness, and spectral

Shah

Abou‐Melha

Saad

et al. 2015

J Therm Anal Calorim

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A series of new homo-binuclear nano Mn(II), Fe (III), Co(II), Ni(II), and Cu(II) complexes were synthesized using a Schiff base ligand derived by condensation of p-phenylenediamine with 2-hydroxy-1-naphthaldehyde. The prepared complexes were characterized using elemental, thermal analyses, FTIR, 1 HNMR, 13 CNMR, UV-Vis, XRD, SEM, molar conductance, and magnetic moment measurements. FTIR spectral studies revealed the interaction of the ligand as bi-negative tetra-dentate towards Mn(II) and Fe(III) atoms, whereas the ligand molecule coordinates in neutral tetra-dentate mode towards Co(II), Ni(II), and Cu (II) ions. The geometries proposed are mainly octahedral configuration surrounds the central atoms referring to the electronic spectral data and magnetic measurements. The calculations abstracted from XRD patterns propose the nano-sized complexes. The SEM images show the nanosized appearance of the particles except for the Ni(II)-complex. Thermo-gravimetric analysis was used to ensure the nature of the presence of solvent molecules attaching to the complexes. Molecular modeling was performed to assert the structural formula proposed for the ligand and some of its complexes. Also, drug-likeness was theoretically estimated to display the probable biological activity of the free ligand through a theoretical comparison with known drugs.

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“…Also, the more or less unshift for the m(C=O) band reveals the absence of C=O group from participation in complexation. [8] of the Cu(II) complex. In the VO 2þ complex, the bidentate nature of SO 4 group was supported by the appearance of two bands at 1150(m 5 ) and 613(m 6 ) cm )1 .…”

Section: Resultsmentioning

confidence: 99%

Spectral and biological investigation of 5-hydroxyl-3-oxopyrazoline 1-carbothiohydrazide and its transition metal complexes

El‐Metwaly

2006

Transition Met Chem

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Mononuclear complexes of 5-hydroxyl-3-oxopyrazoline-1-carbothiohydrazide, H 3 HOC, with VO 2þ , Co(II), Ni(II), Cu(II) and Cd(II) have been isolated. The elemental analyses, magnetic, spectral [u.v.-vis., i.r., e.s.r. 1 H n.m.r. and mass] with thermal analysis have been used to characterize the isolated complexes. The ligand behaves as a mononegative tridentate with Ni(II) and Co(II) ions and neutral bidentate in [Cu(H 3 HOC)ðNO 3 Þ 2 ]0.5H 2 O, [VO(H 3 HOC)SO 4 ] and [Cd(H 3 HOC)Cl 2 C 2 H 5 OH]C 2 H 5 OH complexes. The octahedral structure was suggested for all the isolated complexes except VO 2þ . The TG analyses recorded different decomposition steps started at a temperature, indicating thermally unstable complexes. Screening showed antimicrobial activity for Cd(II) and Ni(II) complexes against the investigated bacteria as well as a significant adverse effects on DNA but a moderate effect is displayed with the other complexes.

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Spectroscopic approach in the characterization of the copper(II) complexes of isatin-3,2′-quinolyl-hydrazones and their adducts

Cited by 17 publications

References 15 publications

Synthesis and characterization of a hydrazone ligand containing antipyrine and its transition metal complexes

Synthesis and characterization of a hydrazone ligand containing antipyrine and its transition metal complexes

Elaborated studies on nano-sized homo-binuclear Mn(II), Fe(III), Co(II), Ni(II), and Cu(II) complexes derived from N2O2 Schiff base, thermal, molecular modeling, drug-likeness, and spectral

Spectral and biological investigation of 5-hydroxyl-3-oxopyrazoline 1-carbothiohydrazide and its transition metal complexes

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