Figure 9
Part of the crystal structure of (IV), showing the formation of a hydrogen-bonded chain parallel to [001] and containing only one type of hydrogen bond. H atoms not involved in the motif shown have been omitted. Atoms marked with an asterisk (*), a hash symbol (#), a dollar sign ($) or an ampersand (&) are at the symmetry positions ( − x, 1 − y, + z), (x, y, 1 + z), ( − x, 1 − y, − + z) and (x, y, −1 + z), respectively. |