This study aims to investigate the nature and types of complexes formed in aqueous solution between 8Hydroxyquinoline (HQ) and the ions of Sc, Y, and La. Potentiometric titration was used to follow the formation of complexes. The coordination compounds formed were studied through the determination of stability constants of these complexes in aqueous solution at 25,0 ± 0,1oC and ionic strength o...

Trace elements appears to play an important part in cancer and trace element requirement is a consequence of this disease. Rechenberger 1 has de­ monstrated experimentally that the iron and cop­ per content of the blood serum are always disturbed and he showed that cancer elevates the copper level of the serum in all cases, and depresses the iron content to a level well below average, except in...

The present work concerns on the investigation of the role of polyethylene glycols (PEGs) as masking agent for amelioration of extraction-separation of La(III), Eu(III) and Er(III) ions by the acidic extractant bis(2-ethylhexyl)phosphoric acid (DEHPA). The studied solvent extraction system is based on the combination of chelating effect of DEHPA in the organic phase on the one hand, and the bin...

The lanthanum(III)-decaborate La4B10O21 was synthesized under high-pressure/high-temperature conditions of 2.6 GPa and 750 ◦C in a Walker-type multianvil apparatus. The single-crystal structure determination revealed that La4B10O21 is isotypic to Pr4B10O21. La4B10O21 crystallizes monoclinically with four formula units in the space group P21/n with the lattice parameters a = 716.7(2), b = 1971.5...

Lanthanum(III) tris(O-tolyl/benzyldithiocarbonates), [La(ROCS2)] (R = o-, m-, p-CH3C6H4 and C6H5CH2), were isolated as yellow solid by the reaction of LaCl3 ·7H2O with sodium salt of tolyl/benzyldithiocarbonates, ROCS2Na (R = o-, m-, p-CH3C6H4 and C6H5CH2), in methanol under anhydrous conditions in 1 : 3 molar ratio. These complexes have formed adducts with nitrogen and phosphorus donor molecul...