Structural Investigation of Ni(II), Cu(II), Pd(II) and UO2 (II) Chelates with Some Hydroxynaphthoic

Abstract

The chelates of divalent Ni, Cu, Pd and UO₂ with some azo derivatives of hydroxy–2–naphthoic acid were investigated using several experimental techniques. The potentiometric technique was utilized to determine the ionization constants of these ligands and the formation constants of their complexes. The conductimetric method was used to identify the complex species in solution, whereas the structure of the separated solid complexes was investigated using IR and NMR spectra and TGA analysis.