Abstract
Coordination compounds of MnII, CuII, FeIII and ZnII ions with 4-acetylpyridine nicotinoylhydrazone (4-APNH) were synthesized and characterized by elemental analyses, molar conductivity, magnetic moments, i.r., u.v./vis., m.s., 1H-n.m.r. and thermal analyses. I.r. spectra show that the ligand can act either in the enol form as monovalent bidentate or in the keto form as neutral bidentate depending on the metal salt used. Octahedral structures are proposed for Fe complex and square – planar for the Cu complex, while tetrahedral structures were suggested for Zn and Mn complexes on the basis of magnetic and spectral evidences. Semi-empirical calculations ZINDO/1 have been used to study the molecular geometry and the harmonic vibrational spectra with the purpose to assist the experimental assignment of the complexes.
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In memory of the late Professor Dr. Abdel Hamid M. Shallaby 2/5/2006
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Hosny, N.M., Shallaby, AH.M. Spectroscopic characterization of some metal complexes derived from 4-acetylpyridine nicotinoylhydrazone. Transition Met Chem 32, 1085–1090 (2007). https://doi.org/10.1007/s11243-007-0288-1
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DOI: https://doi.org/10.1007/s11243-007-0288-1