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Figure 1 An expanded vioew of the asymmetric unit of (I), showing the coordination of the YIII atom, and the presence of the lattice water molecules and the ammonium cation. All hydrogen atoms were omitted for clarity. [Symmetry codes: (i) −x + 1, y + , −z + ; (ii) −x + 1, −y + 2, −z + 1; (iii) −x + 2, −y + 2, −z + 1.] |