Figure 1
The molecular structures of the two centrosymmetric three-molecule aggregates in the crystal of (I) showing the atom-labelling scheme and displacement ellipsoids at the 70% probability level. In (a), the unlabelled atoms are related by the symmetry operation (i) 1 − x, 2 − y, − z and in (b), by (ii) 2 − x, 2 − y, − z. |