Figure 2
The independent components in compound (II) showing the atom-labelling scheme and the hydrogen bonds within the selected asymmetric unit. Displacement ellipsoids are drawn at the 30% probability level, and the atoms marked with the suffix `a' or `b' are at the symmetry positions (1 − x, 1 − y, 1 − z) and (1 − x, −y, 1 − z), respectively. |