Figure 5
A view of the ribbon structure in (Vb); only the major component is shown. H atoms not involved in the hydrogen bonding have been omitted for clarity. The molecule labelled * is at (2 − x, 1 −y, 1 − z), that labelled # is at (x, y − 1, z) and that labelled $ is at (2 − x, 2 − y, 1 − z). |