Figure 1
(a) The principle building block in the structure of Ca(ClO4)2·4H2O and (b) the square anti-prismatic coordination of Ca2+. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry codes: (i) 1 − x, −y, 1 − z; (ii) 1 − x, 1 − y, 2 − z.] |