Figure 7
Part of the crystal structure of compound (IV), showing the formation of a centrosymmetric four-molecule aggregate built from N—H⋯O and N—H⋯N hydrogen bonds, which are drawn as dashed lines. For the sake of clarity, H atoms which are not involved in the motifs shown have been omitted. Atoms marked with an asterisk (*) are at the symmetry position (−x + 1, −y + 2, −z + 1). |