Figure 5
A packing diagram of (II), showing the ribbon structure running along the b-axis direction formed via the O—H⋯N hydrogen bonds (green dashed lines) and π–π interactions (magenta dashed lines). H atoms not involved in the hydrogen bonds are omitted for clarity. Cg1, Cg2 and Cg3 are the centroids of the C1–C6, N2/C8–C11/C16 and C11–C16 rings, respectively. [Symmetry codes: (v) x, y + 1, z; (vi) −x + 1, −y + 1, −z; (vii) x, y − 1, z.] |