Figure 6
Part of the crystal structure of compound (III), showing the formation by the major-disorder form of a cyclic centrosymmetric hydrogen-bonded dimer. For the sake of clarity, the unit-cell outline and H atoms bonded to C atoms that are not involved in the motif shown have been omitted. Atoms marked with an asterisk (*) are at the symmetry position (−x + 1, −y + 2, −z + 1). |