Figure 1
(a) View of the columns along the a axis in the crystal structure of (III). The columns depicted are formed by (Ca1/Sr1) (green) and O atoms (red); the latter are also depicted with bonds to carbon C atoms (grey) and H atoms (light-grey spheres of arbitrary radius). Displacement ellipsoids are shown at the 30% probability level. (b) Perspective view of the columns in (III). |