Figure 2
The molecular components of compound (II) , showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. The hydrogen bonds linking the components into centrosymmetric four-molecule aggregates are indicated by dashed lines. Atoms labelled with the suffixes a and b are at the symmetry position (1 − x, −y, 1 − z). |