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Np(V) acetate in glacial acetic acid and aqueous acetic acid solutions is resistant to disproportiona-tion and occurs in equilibrium with the NpO2(Ac)·H2O precipitate. Within the time of dehydration with excess acetic anhydride, Np(V) disproportionates. The inverse reproportionation process occurs after adding excess water to anhydrous acetic acid containing acetic anhydride, Np(IV), and Np(VI). Addition...
The structure and spectral properties of the Np(V) nitrite and thiocyanate complexes Cs3[NpO2· (NO2)4] and Cs4[NpO2(NCS)5]·2.5H2O were studied. In the structure of Cs3[NpO2(NO2)4], two independent Np atoms occupy special positions and have similar oxygen surrounding in the form of hexagonal bipyramids. The equatorial planes of the bipyramids are formed by the oxygen atoms of four independent nitrite...
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