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Vol. 27 No. 12 (2015): Vol 27 Issue 12

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Spectral and Thermodynamic Studies of Schiff Base Hydrazone Derivatives Complexes with Some Transition Elements

https://doi.org/10.14233/ajchem.2015.19121
E.H. El-Mossalamy
Chemistry Department, Faculty of Science, Benha University, Benha, Egypt
M. El-Batouti
Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
G. Nawmosy
Chemistry Department, Faculty of Science and Arts, Qassim University, Buraydah 52571, Saudi Arabia

Corresponding Author(s) : M. El-Batouti

mervette_b@yahoo.com

Asian Journal of Chemistry, Vol. 27 No. 12 (2015): Vol 27 Issue 12

Abstract

A new hydration Schiff base consisting of 7-chloro-4-(o-hydroxy benzilidenehydrazo)quinoline with some divalent metal ions viz., Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) complexes were studied spectrophotometrically which obeyed Beer’s law up to certain values, 6.6 × 103, 8.0 × 103 dm3 mol-1 cm-1, respectively, indicating that the Schiff base ligand could be used to detect Co(II) and Ni(II) in such concentrations. The study was performed also for Fe(III)-complexes. Conductance and thermodynamically used molar ratio method to determine the stoichiometry of the complexes obtained confirmed the formation of 1:1 and 1:2, M:L complexes. The standard thermodynamic parameters viz. DG, DH and DS, for the proton-legend and the stepwise metal-ligand complexes were analyzed in terms of the electrostatic (eel) and non-electrostatic (crates, c) components. DHc was found to be linearly correlated with the acceptor number of the metal ion (ANM) and DHel was linearly correlated with the ionic radii of the metal ion. The calculated values for DG°, DH° and DS° concluded that the complexion process processed spontaneously.

Keywords

Hydrazone Spectro-potentiality Transition metal complexes Thermodynamic parameters
El-Mossalamy, E., El-Batouti, M., & Nawmosy, G. (2015). Spectral and Thermodynamic Studies of Schiff Base Hydrazone Derivatives Complexes with Some Transition Elements. Asian Journal of Chemistry, 27(12), 4351–4357. https://doi.org/10.14233/ajchem.2015.19121
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