Figure 3
Polyhedral view of the heteropolyanion in (I), with O⋯O contacts of the inter-polyanion hydrogen bonds shown as dashed lines. [Symmetry codes; (i) −x + 1, −y, −z + 1; (ii) x, y, z − 1; (iii) −x + 1, −y + 1, −z + 1; (iv) x, y + 1, z; (v) −x + 1, −y + 1, −z + 2.] |