Synthesis of New Crystalline Pu(V) Compounds from Solutions: II. Double Pu(V) Oxalates with Co(NH3)63+ Ions in the Outer Sphere

Research paper by N. N. Krot, A. A. Bessonov, M. S. Grigor’ev, I. A. Charushnikova, V. I. Makarenkov

Indexed on: 01 Mar '05Published on: 01 Mar '05Published in: Radiochemistry


Crystalline compounds of the general composition Co(NH3)6PuO2(C2O4)2·nH2O (n = 2, 3, 5) were isolated from freshly prepared neutral oxalate solutions of Pu(V) by addition of Co(NH3)63+ ions. These compounds are fairly stable in storage in air and poorly soluble in water. Previously unknown double Np(V) oxalates Co(NH3)6NpO2(C2O4)·nH2O (n = 2, 5) were also synthesized and studied. All the compounds of Pu(V) and Np(V) of the same composition are mutually isostructural. The behavior of these compounds at heating was studied, and their IR spectra were measured. The optical spectra of new Np(V) compounds were measured.