Figure 4
C—H⋯O interactions between molecules related by the screw symmetry running down the b axis. These interactions act between the stacks shown in Fig. 2. Molecules (i), (ii), (iii) and (iv) are at the symmetry positions (x, y, z), (2 − x, + y, − z), (x, 1 + y, z) and (2 − x, + y, − z), respectively. |