Stability constants of certain lanthanide(III) and actinide(III) chloride and nitrate complexes

Effect of counter-anions on the adsorption of trivalent actinides and lanthanides on tertiary pyridine resin in alcoholic chloride and nitrate solutions

“…Strong hydration prevents the coordination of pyridine groups and, therefore, the interaction between pyridine groups and Ln cations should be weaken for heavier Ln cations compared with the lighter ones. This hypothesis is in agreement with the observed decreasing tendency on the distribution coefficients of Ln with the increase of atomic [23] numbers both for nitric acid and for hydrochloric acid systems.…”

“…Metal cations are solvated with nitrate ions (NO 3 − ) in nitric acid solution and with chloride ions (Cl − ) in hydrochloric acid solution. The stability constants for Eu and Am with nitrate and chloride ions reported in some references [23][24][25] are listed in Table 1. These stability constants indicate that the nitrate complexes are more stable than the chloride complexes, although the stability of Eu complexes is similar to that of Am ones in the same medium.…”

Lanthanide Salts Solutions: Representation of Osmotic Coefficients within the Binding Mean Spherical Approximation

“…Nevertheless, we can notice a slight decrease along the series. Analysis of apparent association constants obtained by Kozachenko and Batyaev 42 and Peppard et al 39 led to the same observations.…”

Complexation of Lanthanides with Nitrate at Variable Temperatures: Thermodynamics and Coordination Modes

“…There have been a number of studies [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] to determine the stability constants of lanthanide(III) complexes with nitrate in aqueous solutions, but few were conducted at temperatures higher than 25 o C and the data at 25 o C are scattered. Furthermore, the nature of the nitrate complex (e.g., outer-or inner-sphere) and the coordination mode (e.g., mono-or bi-dentate) are still open for discussion.…”