Synthesis and characterization of iron(III), manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes of salicylidene- N-anilinoacetohydrazone (H 2L 1) and 2-hydroxy-1-naphthylidene- N-anilinoacetohydrazone (H 2L 2)

Salicylidene- N-anilinoacetohydrazone (H 2L 1) and 2-hydroxy-1-naphthylidene- N-anilinoacetohydrazone (H 2L 2) and their iron(III), manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes have been synthesized and characterized by IR, electronic spectra, molar conductivities, magnet...

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Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2007-07, Vol.67 (3), p.737-743
Main Authors: AbouEl-Enein, S.A., El-Saied, F.A., Kasher, T.I., El-Wardany, A.H.
Format: Article
Language:English
Subjects:
Cobalt - chemistry
Cobalt - metabolism
Copper - chemistry
Copper - metabolism
Electric Conductivity
Electron Spin Resonance Spectroscopy
Hydrazone shiff bases
Hydrazones - chemistry
Hydrazones - metabolism
Iron - chemistry
Iron - metabolism
Magnetic Resonance Spectroscopy
Magnetics
Magnetism
Manganese - chemistry
Manganese - metabolism
Metals, Heavy - chemistry
Metals, Heavy - metabolism
Molecular Structure
Mononuclear complexes
Nickel - chemistry
Nickel - metabolism
Schiff Bases - chemistry
Spectra
Spectrophotometry, Infrared
Temperature
Zinc - chemistry
Zinc - metabolism
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Summary:Salicylidene- N-anilinoacetohydrazone (H 2L 1) and 2-hydroxy-1-naphthylidene- N-anilinoacetohydrazone (H 2L 2) and their iron(III), manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes have been synthesized and characterized by IR, electronic spectra, molar conductivities, magnetic susceptibilities and ESR. Mononuclear complexes are formed with molar ratios of 1:1, 1:2 and 1:3 (M:L). The IR studies reveal various modes of chelation. The electronic absorption spectra and magnetic susceptibility measurements show that the iron(III), nickel(II) and cobalt(II) complexes of H 2L 1 have octahedral geometry. While the cobalt(II) complexes of H 2L 2 were separated as tetrahedral structure. The copper(II) complexes have square planar stereochemistry. The ESR parameters of the copper(II) complexes at room temperature were calculated. The g values for copper(II) complexes proved that the Cu O and Cu N bonds are of high covalency.
ISSN:1386-1425
DOI:10.1016/j.saa.2006.07.052