X-ray Crystal Structure of the N-(2-hydroxy-1-naphthalidene)phenylglycine Schiff Base. Synthesis and Characterization of its Transition Metal Complexes

Gudasi, Kalagouda B.; Patil, Manjula; Vadavi, Ramesh S.; Shenoy, Rashmi V.; Patil, Siddappa A.; Nethaji, Munirathinam

doi:10.1007/s11243-006-0031-3

Cited by 91 publications

(100 citation statements)

References 8 publications

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“…18,19 Also, the complex shows magnetic value 5.92 BM indicating high spin Mn(II) complex. 33 The electronic spectrum of this complex in nujol mull shows several absorptions at 372, 450, 484 and 516 nm, the first one is due to the ligand and the other bands are corresponding to ) which are characteristic of octahedral geometry.…”

Section: Manganese(ii) Complexmentioning

confidence: 90%

Synthesis and Spectroscopic Characterization of Manganese(II), Iron(III) and Cobalt(III) Complexes of Macrocyclic Ligand. Potential of Cobalt(III) Complex in Biological Activity

El‐Tabl¹,

Shakdofa²,

El‐Seidy³

2011

Journal of the Korean Chemical Society

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ABSTRACT. A new series of manganese(II), iron(III) and cobalt(III) complexes of 14-membered macrocyclic ligand, (3,6, 10,13,16,19-hexaazabicyclo[6.6.6]icosane-1,8-diamine) have been prepared and characterized by elemental analyses, IR, UV-VIS, 1 H-and 13 C-NMR spectra, magnetic susceptibilities, conductivities, and ESR measurements. Molar conductance measurements in DMF solution indicate that the complexes are electrolytes. The ESR spectrum for cobalt(III) complex in CD3OD+10%D2O after exposure to 60 Co-γ-rays at 77 K using a 0.2217 M rad h -1 vicrad source showed g⊥>g||>ge, indicating that, the unpaired electron site is mainly present in the dz2 orbital with covalent bond character. In this case, the ligand hyperfine tensors are nearly collinear with γ-tensors, so there is no major tendency to bend. Therefore, little extra delocalization via the ring lobe of the dz 2 orbital occurs. However, the ESR spectrum in solid state after exposure to 60 Co-γ-rays at 77 K showed g||>g⊥>ge, indicating that, the unpaired electron site is mainly present in the dx2-y2 ground state as the resulting spectrum contains a large number of randomly oriented molecules provided that, the principle directions of g and A tensors. Manganese (II) complex 2, [H12LMn]Cl4.2H2O, showed six isotropic lines characteristic to an unpaired electron interacting with a nucleus of spin 5/2, however, iron(III) complex 3, [H12LFe]Cl5.H2O, showed spectrum of a high spin 57 Fe (I=1/2), d 5 configuration. The geometry of these complexes was supported by elemental analyses, IR, electronic and ESR spectral studies. Complex 1 showed exploitation in reducing the amount of electron adducts formed in DNA during irradiation with low radiation products.

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Section: Manganese(ii) Complexmentioning

confidence: 90%

Synthesis and Spectroscopic Characterization of Manganese(II), Iron(III) and Cobalt(III) Complexes of Macrocyclic Ligand. Potential of Cobalt(III) Complex in Biological Activity

El‐Tabl¹,

Shakdofa²,

El‐Seidy³

2011

Journal of the Korean Chemical Society

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“…Novel series of amino acid imine ligands of N-(2-hydroxynaphthalene-1-carbaldehyde)phenyl glycine had been synthesized (Scheme-VIII) alongside with X-ray crystallographic The infrared absorption data of the metal complexes displays the same idea about the ligating of ligand to metal and detected that the ligand coordinated through carbonyl oxygen, azomethine nitrogen and hydroxyl oxygen atoms [70] (Fig. 23).…”

Section: Metal Complexes Formed From 2-hydroxynaphthalene-1-carbaldehmentioning

confidence: 99%

Schiff Bases Derived from 2-Hydroxynaphthalene-1-carbaldehyde and their Metal Complexes

Khalid¹

2018

Asian J. Chem.

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2-Hydroxynaphthalene-1-carbaldehyde is a key predecessor to an assortment coordinating agent and the Schiff bases derived from these ligands played a unique role in the development of important biomolecules which exhibit a widely range as a model system for biological macromolecules. Schiff bases formed from o-hydroxy aromatic ketones and aldehydes are stellar design for the study of keto-enol tautomerism in liquid and solid state. The metal-Schiff base complexes obtained from 2-hydroxynaphthalene-1-carbaldehyde had been revealed to show a broad area of biological effectiveness, catalytic reaction, sensors, selective electrodes and fluorescent.

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“…This may be assigned to OH stretching frequencies of the H-Bonded water molecule. Further the IR spectra of the complexes of Cu (II) 16 The electronic spectral data of the complexes in DMF are presented in Table 3.…”

Section: Systemmentioning

confidence: 99%

Synthesis of Co(II), Ni(II) and Cu(II) Complexes from Schiff base Ligand and Reactivity Studies with Thermosetting Epoxy Resin

Lakshmi¹,

Shivananda²,

Prakash³

et al. 2011

Bulletin of the Korean Chemical Society

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A hybrid thermosetting maleimido epoxy compound 4-(N-maleimidophenyl) glycidylether (N-MPGE) containing Co(II), Ni(II) and Cu(II) ions was prepared by curing N-MPGE and tetradentate Schiff base Co(II), Ni(II) and Cu(II) complexes. The curing polymerization reaction of N-MPGE with metal complexes as curing agents was studied. The cured samples were studied for thermal stability, chemical (acid/alkali/solvent) and water absorption resistance and homogeneity of the cured systems. The tetradentate Schiff base, 3-[(Z)-2-piperazin-1-yl-ethylimino]-1,3-dihydro indol-2-one was synthesized by the condensation of Isatin (Indole-2, 3-dione) with 1-(2-aminoethyl)piperazine (AEP). Its complexes with Co(II), Ni(II) and Cu(II) have been synthesized and characterized by microanalysis, conductivity, Uv-Visible, FT-IR, TGA and magnetic susceptibility measurements. The spectral data revealed that the ligand acts as a neutral tetradentate Schiff base and coordinating through the azomethine nitrogen, two piperazine nitrogen atoms and carbonyl oxygen.

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X-ray Crystal Structure of the N-(2-hydroxy-1-naphthalidene)phenylglycine Schiff Base. Synthesis and Characterization of its Transition Metal Complexes

Cited by 91 publications

References 8 publications

Synthesis and Spectroscopic Characterization of Manganese(II), Iron(III) and Cobalt(III) Complexes of Macrocyclic Ligand. Potential of Cobalt(III) Complex in Biological Activity

Synthesis and Spectroscopic Characterization of Manganese(II), Iron(III) and Cobalt(III) Complexes of Macrocyclic Ligand. Potential of Cobalt(III) Complex in Biological Activity

Schiff Bases Derived from 2-Hydroxynaphthalene-1-carbaldehyde and their Metal Complexes

Synthesis of Co(II), Ni(II) and Cu(II) Complexes from Schiff base Ligand and Reactivity Studies with Thermosetting Epoxy Resin

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