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Acta Cryst. (2008). E64, i6 [ doi:10.1107/S1600536807066962 ]
Abstract: The title compound, Na3[NpO4(OH)2]·2H2O, contains distorted tetragonal-bipyramidal centrosymmetric [NpO4(OH)2]3- complex anions. The Np-O distances are 1.8975 (7) and 1.8891 (7) Å in the NpO4 group and 2.3451 (7) Å to the OH group. Both Na atoms (one in a general position, the second in a special position on an inversion centre) have a distorted octahedral oxygen environment.
Online 21 December 2007
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