Thermodynamic Studies of Some Complexes of 2-benzoylpyridine 4-phenyl-3-thiosemicarbazone

Authors : Tevfik Atalay And E Güler AKGEMCİ

Pages : 123-128

View : 16 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The stability constants of the Coinsert ignore into journalissuearticles values(II);, Niinsert ignore into journalissuearticles values(II);, Cuinsert ignore into journalissuearticles values(II); and Zninsert ignore into journalissuearticles values(II); complexes with 2-benzoylpyridine 4-phenyl-3-thiosemicarbazone were determined using a spectrophotometric method at different temperatures insert ignore into journalissuearticles values(25, 30, 35 and 40 \pm 0.1oC); and ionic strengths insert ignore into journalissuearticles values(0.05, 0.01 and 0.20 M KNO3); in 50 % insert ignore into journalissuearticles values(v/v); aqueous ethanol. Plots of thermodynamic stability constants at zero ionic strength insert ignore into journalissuearticles values(\ln Ko); versus T-1 gave linear curves and D Ho and D So were also calculated from these plots. Moreover, the changes in free energy for each metal-ligand system were calculated from the following equation. D Go = -RT \ln Ko.
Keywords : Stability, thiosemicarbazone, ligand, thermodynamic, spectrophotometry