18946-58-2Relevant academic research and scientific papers
Solubilities, Solubility Products and Solution Chemistry of Lanthanon Trifluoride-Water Systems
Menon, Manchery P.,James, Jeffrey
, (1989)
Solubilities and solubility products of 14 lanthanon trifluorides (LnF3*0.5H2O) have been determined using conductometric, potentiometric and radiometric techniques.The solubilities and the averages of selected pKsp values from literature and f
Enthalpies of formation of the monofluorolanthanide complexes
Grant,Baisden,Kinard,Torres
, p. 1156 - 1158 (2008/10/08)
The enthalpies of formation of the monofluoro complexes of 13 lanthanide elements and yttrium have been measured in aqueous solution at 25°C and an ionic strength of 1.0 M by titration calorimetry. Our results for YF2+ compare well with previously reported determinations obtained from temperature-coefficient variations of potentiometric data. The enthalpies of complexation for LnF2+ were found to be endothermic for all lanthanide metals studied and show considerably less variation with increasing atomic number than previous studies. Our values for ΔH101 for the lanthanides are much less endothermic than the earlier determinations and appear to agree well with electrostatic models which correlate entropies for fluoride complex formation with charge/radius ratios. These results indicate that the coordination behavior of the fluoride ion is more similar to that of the acetate ion than was previously thought.
