Figure 7
A packing diagram for (II) , showing the double-tape structure. N⋯H⋯O and C—H⋯O hydrogen bonds are indicated by dashed lines. H atoms not involved in the hydrogen bonds have been omitted. [Symmetry codes: (i) x + 1, y, z; (ii) −x, −y + 1, −z + 1; (iv) −x + 1, −y + 1, −z + 1.] |