Oxoneptunium(v) as part of the framework of a polyoxometalate
Abstract
(NH4)14Na4[(Np3W4O15)(H2O)3(BiW9O33)3]·62H2O (1) and (NH4)14.5Na3.5[(Np3W4O15)(H2O)3(SbW9O33)3]·40.5H2O (2) each contain three neptunyl(V) moieties encapsulated within heteropolyoxotungstate frameworks in which axial {NpO2}+ oxygens form one face of a WO6 octahedron.