Figure 1
The asymmetric unit of K2[Hg(SO3)2]·2.25H2O, showing the atom labelling and with displacement ellipsoids drawn at the 74% probability level. The additional O atoms augmenting the coordination sphere of the HgII atoms are also shown. K—O bonds and O⋯O interactions have been omitted for clarity. [Symmetry codes: (i) −x + , −y + , −z + 1; (ii) −x, −y + 1, −z + 1; (iii) −x, −y, −z + 1; (iv) −x + , −y − , −z + 1.] |