Figure 7
Part of the crystal structure of compound (III), showing the formation of the hydrogen-bonded R22(16) and R22(18) rings which generate a chain parallel to [01]. For the sake of clarity, H atoms not involved in the motifs shown and the unit-cell outline have been omitted. Atoms marked with an asterisk (*) or a hash (#) are at the symmetry positions (−x, −y, −z + 1) and (−x, −y + 1, −z), respectively. |