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  • Chem Sci Trans., 2012, 1(3),  pp 538-551  

    DOI:10.7598/cst2012.132

    Research Article

    Potentiometric Study of Complexation Between Three Oxime Derivatives and Some Metal Ions in Water-Dioxane Mixed Solvent

  • ARDESHIR SHOKROLLAHI* and AZADEH NAGHASHIAN HAGHIGHI
  • Department of Chemistry, Yasouj University, 75918-74831, Yasouj, Iran
  • Abstract

    The complexation equilibria of oximes including 1-phenyl-2-(quinodin-2-yl) ethanoneoxime (pqeo), 2-acetophenone oxime (apo) and 3-nitro benzaldoxime (nbo) with some transition and heavy metal ions such as Cu2+, Co2+, Ni2+, Zn2+, UO22+ and La3+ were studied by potentiometric method in water-dioxane mixed solution. All of the titration steps were carried out at 25.00.1 C and ionic strength () of 0.1 M supported by KNO3. The overall stability constants log of respective species were evaluated by computer refinement of the corresponding potentiometric pH titration data using BEST computer program. The corresponding distribution diagrams were depicted as a function of pH by using HySS2009 program. The most likely species were obtained from distribution diagrams and the effect of the oximes structures on the stability constant values were investigated.

    Keywords

    Potentiometric study, 1-Phenyl-2-(quinodin-2-yl) ethanoneoxime, 2-Acetophenone oxime, 3-Nitro benzaldoxime, HySS2009 program

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