Complex(HL) G° (K. cal. Mol-1) ΔH° (K. cal. Mol-1) S° (K. cal. Mol-1)
-ΔG°el -ΔG°non -ΔH°non ΔH°el ΔS°el
logk1 logk2 logk1 logk2 logk1 logk2 logk1 logk2 logk1 logk2
Co(II) 11.3959 11.8801 2.5944 2.76177 5.01251 5.17988 4.89164 5.09949 53.7543 56.0383
Cd(II) 11.2204 12.2145 2.4787 3.0236 4.89681 5.44171 4.81629 5.24301 52.9262 57.6155
Ni(II) 11.4689 11.8741 2.64602 2.78171 5.06413 5.19982 4.92298 5.09689 54.0987 56.0097
Zn(II) 10.533 10.9843 2.23716 2.45127 4.65526 4.86937 4.52123 4.71497 49.6838 51.8128
Fe(III) 8.73795 9.76253 1.53631 1.88442 3.98 4.30252 3.75072 4.19052 41.2168 46.0497
Mn(II) 10.8026 11.9365 2.93815 2.77479 5.35626 5.19289 4.63697 5.12367 50.9557 56.304
Table 3: Electrostatic (el) and non-electrostatic thermodynamic parameters for the reaction of metal ions with HL ligand in 75 % a(v/v) ethanol-water at 30°C.