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Figure 1 The crystal structure of Ce[B5O8(OH)(H2O)][NO3].2H2O projected onto (100). [BO4] groups are drawn as red tetrahedra; [BO3] as blue triangular groups; [NO3] as green triangular groups; Ce as black spheres; O as red spheres; H as small black spheres). The inset on the right represents the coordination environment of the Ce atom in a 1–6–3 crown-shaped polyhedron. |