Determination of UO2(II), Th(IV) and Ce(III) complexes formed with halogen and nitro derivatives of 8-hydroxyquinoline
Articles > Article · 2000
Authors: Serap TEKSÖZ, Perihan ÜNAK
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, Journal Indexed in SCI Expanded, International, 2000, vol 246, pp 323-326
Summary
Proton-ligand stability constants for some iodo and nitro derivatives of 8-hydroxyquinoline were determined by Calvin Bjerrum potantiometric method. The stability constants of the corresponding chelates with UO2 (II), Th(IV) and Ce(III) were studied potentiometrically at 25 degreesC by applying Irving-Rossotti computing method. The complexes of the nitro-substituted ligands were less stable than the corresponding complexes of the unsubstituted ligands. The stability constants of metal-ligands depend on the ionic radii and ionic charge of metals and also they decrease with steric repulsions of the nitro groups.