Hydroxide complexes of lanthanides-VIII Lanthanum(III) in perchlorate medium.
From the precipitation borderline in the pLa'-pC(H) diagram the stability constants for (mononuclear) lanthanum-hydroxide species have been established. The presence of polynuclear species could not be demonstrated and seems unlikely. The values found were log *beta(1) = -8.6, log *beta(2) = -17.9, log *nu(3) = -27.3 and log *K(s0) = 22.8. The data refer to precipitates prepared under CO(2)-free conditions at room temperature (21.5 +/- 0.5 degrees ) in sodium perchlorate medium with an ionic strength of 1.
Kragten
J
J
Laboratorium voor Analytische Chemie der Universiteit van Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands.
Decnop-Weever
L G
LG