Electrical conductance of cobalt [III] complexes of acetylpyridinethiosemicarbazone halides in ethanol at 25C

The conductance in ethanol solution of cobalt [III] complexes of acetylpyridinethiosemicarbazone halides has been measured at 25C and analyzed using the Fuoss-Onsager equation in an attempt to obtain accurate values of the molar specific conductivity at infinite dilution lambda degree, the closest distance of approach a degree and the association constant KA. From the study of the anion solvation, association was found to decrease with increasing the anionic radius. The relation between KA and the solvent separated-iron pair model was discussed. The electrostatic Stoke's radii R+ and R- were calculated

Electrolytic behavior of S-acetylthiocholine iodide in methanol-water mixtures at 250

The conductance of S-acetylthiocholine iodide is measured in methanol-water mixtures covering a range of dielectric constant 32.63 < D < 78.54 at 25 degree. The data are analyzed using the Fuoss-Onsager equation to get lambda [0], K [A], and a degree. The equivalent conductance at infinite dilution lambda [0], and the ion-size parameter, a degree, decrease till a certain minimum then increase again with decreasing dielectric constant. The relation between log K[A] vs. 1/D is nonlinear. The association constant K[A] is analyzed on the basis of the solvent separated-ionpair model

Isoionic association of cobalt [III] complexes of pyridinealdehyde-thiosemicarbazone halides in water, methanol and ethanol

The ion-pair association of cobalt [III] complexes of pyridinealdehydethiosemicarbazone halides in water, methanol, and ethanol at 25 degree from conductance measurements was found to depend on the solvation of the anion and decreased with increasing anion crystallographic radius. The association constant KA increased with increasing anionic in water while the contrary was observed in the case of methanol and ethanol. The association constant KA is analyzed on the basis of solvent separated -ion pair model

Conductance of cobalt [II] complexes of acetonethiosemi-carbazone chloride and bromide in methanol-water mixtures at 25

The conductance of cobalt [II] complexes of acetone thiosemicarbazone chloride and bromide is measured in methanol-water mixtures covering a dielectric constant ranging between 32.63 - 69.94 at 25C. The data are analyzed using the Fuoss-Onsager equation on an IBM-PC computer. It was found that a degree for chloride increase with the decrease of dielectric constant, while a degree for bromide decreases with the decrease of dielectric constant until a certain value, and then increases thereafter. The plot of log KA vs. 1/D is found to be nonlinear. Finally, the solvent separated-ion pair model is applied to these systems

Comparative study of ionic association of Cobal [II] complexes of acetonethiosemicarbazone and acetophenonethiosemicarbazone chlorides in methanol from conductance measurement

The ion-pair association of Co [II] complexes of acetonethiosemic arbazone and acetophenonethiosemicarbazone chlorides in methanol at 25?C from conductance measurements was found to depend on the solvation of the cation and decreased with increasing the cation crystallographic radius. The association constant k[A]is analyzed on the basis of solvent separated-ion pair model