Figure 6
Part of the crystal structure of compound (IIIa), showing the formation of a cyclic centrosymmetric motif built from C—H⋯π hydrogen bonds and linking adjacent (100) sheets. Hydrogen bonds are drawn as dashed lines and, for the sake of clarity, H atoms not involved in the motif shown have been omitted. The atom marked with an asterisk (*) is at the symmetry position (−x + 1, −y + 1, −z + 1). |