Radiochimica Acta · 2000 · 31 citations · 16 references
Natural SciencesChemistryPhysicsInorganic ChemistryPhysical ChemistrySpectroscopyCoordination ChemistryInorganic SpectroscopyLaser SpectroscopyMetal OxidesOptical SpectroscopyRaman SpectroscopyCation Coordination ChemistryChemical Equilibrium ConstantsEquilibriumEquilibrium ConstantsIonic StrengthIonic Strength DependenceIonic Strength EffectsPhotoacoustic Spectroscopy
Cation-cation complexes of NpO 2 + and PuO 2 + with UO 2 2+ and Th 4+ were studied using laser-induced photoacoustic spectroscopy (LIPAS). An equilibrium constant of 2.4±0.2 M -1 was measured at an ionic strength of 6.0 M for the NpO 2 + · UO 2 2+ complex which is in good agreement with previous measurements using conventional absorption spectroscopy and Raman spectroscopy. Equilibrium constants of 1.8±0.9 and 2.2±1.5 M -1 were measured for NpO 2 + · Th 4+ and PuO 2 + · UO 2 2+ complexes at an ionic strength of 6.0 M, respectively. This is the first time that LIPAS has been used to study cation-cation complexes and the first time that the PuO 2 + · UO 2 2+ cation-cation complex has been reported.
16
“Cation-cation” complexes of pentavalent actinides—I
C. Madic, B. Guillaume, J.C. Morisseau et al. · Journal of Inorganic and Nuclear Chemistry · 1979 · 50 citations