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Synthesis, Spectral and Dissociation Thermodynamics Studies ofCobalt (II), Nickel (II) and Copper (II) Complexes with2-Hydroxyacetophenone Derivatives | ||
| Journal of Al-Nahrain University - Science | ||
| Article 1, Volume 14, Issue 1, 2011, Pages 30-39 | ||
| Author | ||
| Juman Ahmed Naser | ||
| Abstract | ||
| The ketone 2-hydroxyacetophenone was treated with ammonia gas and hydroxylaminehydrochloride for the synthesis of its Schiff base and oxime respectively. The two ligands wereused to synthesize Co(II), Ni(II) and Cu(II) complexes. The ligands and complexes have beencharacterized by IR and UV spectroscopy. Elemental analyses have been performed using C. H. N.for ligands and atomic absorption technique for complexes. The limiting molar conductivity of[M(HANH)2] and [M(HAO)2] complexes in DMF and DMSO at different temperature wasmeasured. The dissociation constant, thermodynamic parameters of dissociation (ΔG, ΔH and ΔS)and the activation energy of the transport process (Ea) were calculated and discussed. The resultsshow that the dissociation constant values in DMF are larger than that in DMSO. The dissociationprocess is endothermic for all complexes. | ||
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