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  • Küçük Resim
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    THERMODYNAMIC STABILITIES - THERMODYNAMIC PARAMETERS OF SOME COMPLEXES OF 4'-MORPHOLINOACETOPHENONE 4-PHENYL-3-THIOSEMICARBAZONE
    (ELSEVIER SCIENCE BV, 1994) ATALAY, T; OZKAN, E
    The stability constants (ln K) of the Co(II), Ni(II), Cu(II), Ag(I), Cd(II) and Hg(II) complexes with 4'-morpholinoacetophenone 4-phenyl-3-thiosemicarbazone were determined using a spectrophotometric method at different temperatures (25, 30, 35 and 40 +/- 0.1 degrees C) and at different ionic strengths (0.05, 0.10 and 0.20 mol dm(-3)) in 60% (v/v) aqueous dimethylformamide. Plots of thermodynamic stability constants at zero ionic strength (ln K-0) versus T-1 gave linear curves, and Delta H theta and Delta S theta were also calculated from these plots. Moreover, the changes in free energy for each metal-ligand system were calculated from the equation Delta G theta = -RT ln K-0.
  • Küçük Resim
    Öğe
    THERMODYNAMIC STUDIES OF SOME COMPLEXES OF 4'-MORPHOLINOACETOPHENONE THIOSEMICARBAZONE
    (ELSEVIER SCIENCE BV, 1994) ATALAY, T; OZKAN, E
    Ni(II), Cu(II), Ag(I) and Hg(II) form 1:2 (metal-ligand) complexes with 4'-morpholinoacetophenone thiosemicarbazone. The stability constants of these complexes in 60% (v/v) aqueous DMF were determined at different ionic strengths (0.07, 0.13 and 0.20 M) and at different temperatures (25, 30, 35 and 40 +/- 0.1-degrees-C) using a spectrophotometric method. From these constants, the thermodynamic stability constants and thermodynamic parameters (DELTAG(formal), DELTAH(formal), DELTAS(formal)) were calculated.