Figure 3 A view of the local coordination of the CoII cations in (II), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms have been omitted for clarity. [Symmetry codes: (i) −x, −y, −z; (ii) x, y − 1, z; (iii) x − 1, −y − , z + .]