Znorg. Chem. 1984, 23, 3926-3930
3926
Contribution from the Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
Carbonate Complexation of Dioxoneptunium(V1) at 25 OC: Its Effect on the Np(V)/Np(VI) Potential1a LEON MAYA Received October 11, 1983
The carbonate complexation constants for dioxoneptunium(V1)were derived from potentiometric titrations of neptunium(V1) under different carbon dioxide partial pressures in the range between pH 5.0 and 8.0. The values obtained are similar to those of the dioxouranium(V1). The carbonate-containingspecies that attain a significant concentration in this pH range are (Np02)2C03(OH)
