Figure 2
The crystalline packing of (I). A view along the crystallographic a axis has been selected in order to show both the conformation of the tetramethylene segment and the network of hydrogen-bond interactions (dashed lines). Atoms marked with an asterisk (*) or a hash (#) are at the symmetry positions (x, − y, z + ) and (x, y, 1 + z), respectively. Atom H2A forms a hydrogen bond with atom O3 at (1 − x, 1 − y, −z); this has been omitted for clarity. |