Figure 2
The packing viewed along the c-axis direction. C—H⋯O hydrogen bonds are shown as black dashed lines, while C—H⋯π(ring) interactions are shown as purple dashed lines. The π-stacking interactions are shown as orange dashed lines. Cg1 and Cg2 are the centroids of the C1–C6 and C1/C6/N1/C7/C8/N2 rings, respectively. [Symmetry codes (i), (ii) and (iii) are defined in Table 1, while (iv) is −x, −y + 1, −z + 1.] |