Figure 8
Molecular coordination in piperazine. This figure should be compared with Fig. 7(b). Molecular coordination paths are indicated with a dashed line; links to the top and bottom layers have been omitted for clarity, although the centroids in these layers are indicated with filled circles. Hydrogen bonds are shown with a double dashed line. Layers in this structure may be chosen in several different ways; those shown in Fig. 4(c) run vertically in this figure. H atoms attached to C are omitted for clarity. |