Figure 8
Part of the crystal structure of polymorph (IIa), showing the formation of a chain of rings parallel to [010]. For the sake of clarity, H atoms bonded to C atoms have been omitted. Atoms marked with an asterisk (*), a hash (#) or an ampersand (&) are at the symmetry positions (2 − x, y − , − z), (x, y − 1, z) and (2 − x, + y, − z), respectively. |